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Non-Toxic Activewear Guide: PFAS “Forever Chemicals” in Workout Leggings & Yoga Pants

Mamavation » Blog » Product Investigations | Mamavation » Non-Toxic Activewear Guide: PFAS “Forever Chemicals” in Workout Leggings & Yoga Pants
Group of slim attractive women wearing sportswear doing yoga standing on mats in circle outdoors on nature performing practising asana exercise Virabhadrasana Warrior I Pose

January 18, 2022 //  by Leah Segedie

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Are you looking for non-toxic activewear like workout leggings & yoga pants? Whether you wear your activewear for leisure or for activity at the gym, we aren’t judging. But what we ARE judging is the 32 workout legging and yoga pant brands that we sent to an EPA-certified laboratory to test for indications of per- and polyfluoroalkyl substances (PFAS), a toxic class of chemicals linked to a number of serious health conditions.

Mamavation ranked 32 pairs of activewear including workout leggings and yoga pants based on indications of PFAS “forever chemicals” and we are naming names in this report including what we discovered from brands like more casual LulaRoe, Athleta, & Lululemon. You’ve trusted Mamavation to bring you topics like best green beauty makeup brands sans PFAS, best cookware sans PFAS, and best organic mattresses sans PFAS, now join us for our consumer study on women’s activewear including workout leggings and yoga pants. Continue reading below to the very end for the raw data from all the brands we tested.

Disclosure: This content of this post was reviewed by Pete Myers, Chief Scientist at Environmental Health Sciences, Adjunct Professor of Chemistry at Carnegie Mellon University, and Co-Author of Our Stolen Future & Scott Belcher, Research Scientist with the Center for Environmental & Health Effects of PFAS at North Carolina State University. The content was also medically reviewed by Sondra Strand, RN, BSN, PHN. Donations were provided by Environmental Health News and Mamavation community members. Mamavation has only “spot-checked” the industry and thus we cannot make predictions about brands and products that we have not tested. Products and manufacturing aides can change without notice so buyer beware. This post contains affiliate links, with some to Amazon, which means Mamavation will receive a portion of those sales and we will use that to pay ourselves back for the testing. You can also give a tax-deductible donation to our consumer studies here through Environmental Health Sciences. Click “yes” when asked if the gift is in honor of someone and type “Mamavation.” Thank you!  

Wearing comfy stylish grey black color activewear group of people working out performing Seated Forward Bend exercise. Mixed-race woman and associates gather together for yoga training at sport club

Table of Contents

  • Toxic PFAS “Forever Chemicals” Inside Activewear Apparel
  • Main Findings of Mamavation’s Consumer Study On Activewear & PFAS “Forever Chemicals”
  • PFAS “Forever Chemicals” Are Linked to Terrible Health Outcomes
  • What to Look for When Purchasing Non-toxic Activewear and Want to Avoid PFAS “Forever Chemicals”
  • Regulation & Movements to Protect Your Family from Exposure to PFAS Through Clothing
  • Sources of PFAS Contamination in Activewear From Experts
    • Treatments for Stain or Water Resistance
    • Sprays & Lubrication on Equipment
    • Clean-Out Chemicals
  • Mamavation’s Consumer Study on Women’s Activewear & Indications of PFAS Details
    • Not Our Favorite Activewear — Workout Leggings & Yoga Pants
    • Better Activewear — Workout Leggings & Yoga Pants
    • Best Activewear — Workout Leggings & Yoga Pants
  • Other Mamavation PFAS Testing Projects

Toxic PFAS “Forever Chemicals” Inside Activewear Apparel

The athletic apparel industry has been relying on PFAS and other types of toxic chemicals for decades to bring sweat wicking, stain resistance, water resistance, quick-drying fabric, and other types of nonstick qualities to textiles used for high-performance clothing. Whether you purchase high-rise leggings made of polyester, nylon, and spandex or high waist yoga pants made from cotton or water bottles, workout clothes have changed over the years. Today your workout clothes made from your favorite activewear brand can be treated with a concoction of undisclosed chemicals we know very little about from sizes xxs to xxl and beyond.

Your lightweight pair of leggings with a snug waistband & tight seams around your thighs help you get the best workout in cold weather, hiking in the mountains, wearing bike shorts on your favorite route, spinning in spin class, stretching in yoga class, working hard with your personal trainer, or playing tennis. But even if you are just lounging in the comfort of your own home, what you surround your skin with matters. The problem is we do not know how problematic dermal exposure to PFAS is. 

“While we know that PFAS can be absorbed through the skin we don’t have much information about how much would be transferred from activewear products. It’s unlikely to be 0, ” says Pete Myers, Chief Scientist at Environmental Health Sciences, Adjunct Professor of Chemistry at Carnegie Mellon University, and Co-Author of Our Stolen Future.

The other problem in activewear apparel is we have no idea what activewear brands are exposing us to PFAS “forever chemicals” so this is the challenge Mamavation has decided to take on.

We may not be able to tell you HOW bad this exposure is, but at least we can help you get a better idea of where it’s coming from.

Sports Woman Training In Fashion Black Sportswear, Workout With Fitness Ball

Main Findings of Mamavation’s Consumer Study On Activewear & PFAS “Forever Chemicals”

Mamavation sent 32 pairs of activewear, mostly workout leggings and yoga pants, to an EPA-certified lab to test for organic fluorine, which is an indicator of PFAS. These products were purchased between June and November from Amazon.com, Nordstrom, Target.com, and several other websites. Products were photographed and not taken out of their original packaging and then were sent to a third-party EPA-certified laboratory. Each pair of activewear was tested for organic fluorine in the crotch area. The laboratory results are summarized below:

  • The crotch area is the most common area to find detectable organic fluorine, which is a marker for PFAS, including inside the crotch of LulaRoe leggings, which we found at 284 parts per million (ppm)!
  • 25% of the workout leggings, yoga pants, & leisure leggings we sent to the lab came back with detectable levels of organic fluorine, and here’s the good news– 75% of the pairs we tested did not contain any detectable levels.
  • Detectable levels we found ranged from 10 parts per million (ppm) all the way to 284 parts per million (ppm) organic fluorine.
  • Because most brands are able to produce leggings without the use of PFAS, this tells us it’s not essential as a chemical treatment in women’s leggings and should be immediately phased out. 

To see the final results of each brand, scroll down to the very bottom where we share the lab results of each brand tested.

Non-Toxic Activewear Guide: PFAS "Forever Chemicals" in Workout Leggings & Yoga Pants

PFAS “Forever Chemicals” Are Linked to Terrible Health Outcomes

PFAS chemicals are linked to several health problems ranging in seriousness. Here is the list of health problems (PFAS) perfluorinated chemicals are linked to from over decades of research:

  • reduction in immunity
  • metabolic diseases like obesity & diabetes
  • reduced vaccination response
  • cardiovascular disease
  • affect the growth, learning, and behavior of infants and older children
  • increased risk of allergies & asthma in young children
  • lower a woman’s chance of getting pregnant
  • increase the chances of miscarriage
  • increase cholesterol levels
  • low sperm count
  • smaller penis size
  • increase the risk of kidney & testicular cancers

If you feel like you’ve been exposed to PFAS, the Agency for Toxic Substances and Disease Registry, a division of Community Health Investigations has created this fact sheet to use when talking to your doctor. While regulating authorities struggle to catch up, it would be wise to limit your daily exposure to PFAS within consumer products.

Healthy lifestyle and sport concepts. Woman in fashionable sportswear is doing exercise.

What to Look for When Purchasing Non-toxic Activewear and Want to Avoid PFAS “Forever Chemicals”

Now that we know 25% of the activewear Mamavation tested came back from the lab with indications of PFAS, what do we do when purchasing high-quality activewear & athleisure loungewear? Your activewear is your most important workout gear out of all your accessories. Here’s our best advice for purchasing the best workout leggings and yoga pants in the future.

  • Workout Leggings: Most of the workout leggings for high impact were made of synthetic materials like polyester, spandex, and nylon, which are based on petrochemicals. So you’ll have to pay close attention to the report findings here because not all pants made from synthetic materials had an indication of PFAS. However, if you are looking for low impact, sticking to natural materials like cotton greatly improves your chances of avoiding PFAS. The best workout leggings are going to offer you a sense of comfort and ease, versatility & durability when changing from one activity to another while using the least amount of toxic materials and treatments possible. Bonus points if you have some type of hidden pocket where you can stash your mobile phone.
  • Yoga Pants & Leisure Leggings: If you are looking for the best yoga pants or leisure leggings, there are more safe options. Whether it’s your best yoga leggings to do your hot yoga or a simple yoga session in your favorite studio or at home, your pair of yoga pants will be hugging your body. The best piece of advice is to scrutinize synthetic materials made from petrochemicals that are “buttery soft.” LulaRoe, which is a brand known for being “buttery soft” had results as high as 284 parts per million (ppm) in the crotch area. Best to stick with natural fabrics like cotton if you are purchasing for low impact.

Runner woman stretching before workout, sitting on stadium track.

Regulation & Movements to Protect Your Family from Exposure to PFAS Through Clothing

Are there any laws protecting your family from PFAS in clothing? Not really. Many toxic chemicals can find their way into your clothing without a label. Here is some of the good news and bad news about the movement to ban PFAS in apparel:

  • Globalization Safety Nightmares: Even though some chemicals, like formaldehyde which is linked to cancer, are regulated, most brands are manufacturing clothing overseas where those regulations are mostly non-existent or far behind the United States or European Union.
  • California’s Prop. 65 List Doesn’t Cover Clothing Treatments: Some states like California go further in restricting chemical usage through Prop. 65, but in that case, they only need to notify you the chemical is there. However, most PFAS chemicals used on clothing are not part of the restricted list yet. Older legacy chemicals like PFOA & PFOS are on the Prop. 65 list. Therefore, other states may need to take the lead here.
  • Priorities on PFAS are Elsewhere: Other state governments are taking legislative and regulatory actions to phase out PFAS, but most of the focus right now is on drinking water, groundwater cleanup in areas by military bases, food packaging, cookware, carpets & rugs, upholstery, and personal care products like makeup. States like California and New York are looking into regulating textiles, but no legislation has been passed yet. Maine signed a law banning all PFAS compounds, but the law doesn’t go into effect until 2030, so it’s not impacting the textile industry yet.
  • NGO Movements: There is some movement with organizations like Toxic-Free Future and its Mind the Store Campaign who are pressuring outdoor apparel companies like REI to stop using PFAS in their clothing and gear. (Click here to sign the petition). The Mind the Store Campaign works with major retailers to reduce and eliminate dangerous chemicals while also producing an annual retail report card to help us understand which retailers are working to protect our families. One retailer that has improved a great deal over the years is Target and it’s evident by their non-detect laboratory results in this report.

Toned young women in sportswear standing on mats barefoot prepared for yoga class, fit females ready for training in fitness studio, sportive girls in sport leggings and bras practice pilates together

Sources of PFAS Contamination in Activewear From Experts

There are several ways that PFAS can get into your workout leggings and yoga pants. Here are some potential issues we found from interviews with experts that may cover what we are seeing in the laboratory results.

Treatments for Stain or Water Resistance

The first way that PFAS can find its way onto your activewear is on purpose as treatments by the manufacturer.  These treatments are very rarely disclosed on the label, but they serve the following functions:

  • stain resistance
  • water resistance
  • moisture-wicking
  • sweat-wicking

Activewear that was tested by our laboratory found detectable levels of organic fluorine mostly around or inside the crotch area making it look like an intentional treatment of some kind on the fabric.  This was something we also ran across when we tested the most popular period underwear products for indications of PFAS as well.

Sprays & Lubrication on Equipment

Sometimes manufacturing equipment requires the use of lubrication to keep it running smoothly. Trace amounts of those lubrications can come off the machine and onto the fabric. In addition, sometimes equipment is sprayed with chemicals to keep things from sticking to machinery. This is also another way that trace amounts of PFAS can get on a piece of clothing.  It’s also possible that manufacturing equipment could be covered in a PFAS “non-stick” chemical OR utilize fiberglass that has been treated with a PFAS chemical.

Clean-Out Chemicals

The manufacturing equipment and storage equipment must be cleaned out in between uses to prevent the spread of bacteria and cross-contamination. Some cleaners used by manufacturing plants are made with fluorinated ingredients and their trace amounts can get into your product if they are not rinsed off properly.

black woman wearing black activewear

Mamavation’s Consumer Study on Women’s Activewear & Indications of PFAS Details

Mamavation will first explain how we structured our study then will present the findings. Each pair of activewear was tested for organic fluorine, which is an indicator of PFAS, in the crotch area. Organic fluorine testing is a useful test when looking for PFAS. There is no standardized testing for PFAS in textiles, so there are many ways to do it. Looking for the presence of organic fluoine is more useful in identifing if any PFAS compound is present. When using testing to identify and isolate PFAS compounds, the testing is more restricted. Only 150 of these PFAS compounds can be identified in an University lab leaving over 9,000 unidentifiable. Therefore, looking for organic fluorine allows us to look at the bigger picture and will inform our audience better.

To determine what activewear to test, we used information gathered from the Mamavation community when we asked what brands they were wearing. The products were purchased from Amazon.com, Target, Nordstrom, or directly from their own websites between June and December 2021. They were sent to a third-party laboratory unopened in their original packaging after pictures were taken.

Each pair of activewear was tested at least once for total fluorine. If fluorine was detected, we ran an additional test that determines organic fluorine. The lab method commissioned by Mamavation was ion-selective electrode & oxygen flask combustion. The limit of detection level was 10 parts per million (ppm). In other words, some Activewear products that tested 0 may have had levels beneath 10 parts per million.  Our tests weren’t sensitive enough to detect lower than 10 ppm.

[Update: Additional products have been added to this consumer study since original publish date.]

Living room fitness workout - girl doing plank exercises to exercise core at home. Young Asian woman training muscles in front of the TV as part of a healthy lifestyle without going to the gym

Not Our Favorite Activewear — Workout Leggings & Yoga Pants

Our EPA-certified lab detected organic fluorine in the following products, listed below. We recommend you choose other products.

  • Athleta Girl Chit Chat Shorts — 17 parts per million (ppm) organic fluorine
  • Boody Motivate 3/4 High Waist Tights Black — 17 parts per million (ppm) organic fluorine [updated 3/23}
  • Gaiam High Rise Waist Yoga Pants Performance Compression Workout Leggings — 15 parts per million (ppm) organic fluorine
  • Knix Hightouch High Rise Leggings — 19 parts per million (ppm) organic fluorine
  • Lululemon Align Highrise Pant — 32 parts per million (ppm) total fluorine. (Lululemon Align High Rise Short with Pockets 8″ was non-detect.) We’ve decided to place this brand here because we detected fluorine in the first pair.
  • LulaRoe Leggings — 284 parts per million (ppm) organic fluorine
  • Old Navy Athletic Pants — 17 parts per million (ppm) organic fluorine
  • OYA Femtech Apparel Yoga Pants — 10 parts per million (ppm) organic fluorine [updated 3/23]
  • Vuori Elevation Performance Black Camo Athletic Leggings — 23 parts per million (ppm) organic fluorine
  • Yogalicious “Lux” High Waist Side Pocket Capri — 10 parts per million (ppm) organic fluorine

redheaded woman sitting on fitness mat at home in living room, using laptop, in sportswear

Better Activewear — Workout Leggings & Yoga Pants

These are the better activewear brands. Our third-party EPA-certified lab did not detect organic fluorine at or above 10 parts per million (ppm) detection level. We’ve linked up some brands for your convenience. These brands are safer, but they contain some materials that are not considered eco-friendly or sustainable like polyester or nylon, which is made from petrochemicals.

  • 90 Degrees by Reflex Wonderlink Legging — non-detect total fluorine
  • All In Motion (Target Brand) Legging — non-detect total fluorine
  • Alo High-Waist Alosoft Flow Legging — non-detect total fluorine
  • Blanqi Power Sculpt Workout Legging — non-detect total fluorine
  • CALIA by Carrie Underwood High Rise 7/8 Ankle Athletic Pants — non-detect total fluorine
  • Fabletics High Waisted Power Hold Legging — non-detect total fluorine
  • GapFit Teen Recycled Biker Shorts — non-detect total fluorine
  • Girlfriend Collective Activewear Leggings — non-detect organic fluorine [updated 3/23]
  • LIVI High Rise Soft ing with Pockets Leggings — non-detect total fluorine
  • LL Bean Boundless Performance Capri — non-detect total fluorine
  • Lorna Jane Willpower Colour Block Full-Length Leggings — non-detect total fluorine
  • Marika Athletic Leggings — non-detect total fluorine
  • Mizuno Women’s Printable 3/4 Tights — non-detect total fluorine
  • Nike’s Women Luxe Ribbed High Rise 7/8 Yoga Tights — non-detect total fluorine
  • Nike Universa High Rise Athletic Pants — non-detect total fluorine [updated 8/24]
  • No Bull Project W. Crop High Rise Matte Leggings — non-detect total fluorine
  • Reebok Retight Running Carrera Tights — non-detect total fluorine
  • Spanx Look at Me Now Legging Camo — non-detect total fluorine
  • Sweaty Betty Power Sculpt Pocket Workout 7/8 — non-detect total fluorine
  • Under Armour Women’s UA HeatGear Leggings — non-detect total fluorine
  • YPB sculptLUX Legging Ultra High Rise 7/8 Length Sweatwicking Functional Pocket — non-detect total fluorine
  • Zella HW Live 7/8 Legging — non-detect total fluorine
  • Zyia Active Black Light n Tight Hi-Rise Crop 17″ 6-8 — non-detect fluorine

Young woman in sport clothes running outdoors

Best Activewear — Workout Leggings & Yoga Pants

These are the best activewear brands. Nor only did these activewear lines have non-detectable levels of fluorine via our third-party EPA-certified laboratory, these brands also used fabric from sustainable farming practices.  For example, they used GOTS organic cotton or utilizing alternative fabrics with the aim to cut down fossil fuel emissions. We reached out to some brands after testing to get discounts for your purchases so you can add them to your closet.

  • Groceries Apparel Leggings — non-detect total fluorine
  • Maggie’s Organic Blackout Leggings  — non-detect total fluorine (DISCOUNT: Take 15% off purchase by using “MAMAVATION15” at checkout!)
  • Mate The Label Organic Stretch Legging — non-detect total fluorine (DISCOUNT: Take 15% off purchases by using “MAMAVATION” at checkout! Limit 1 per customer.)
  • Pact Organic Go-To Pocket Legging — non-detect total fluorine (DISCOUNT: Take 15% off your first Pact Organic purchase by using “MAMAVATION15” at checkout! Discount for new customers only.)

girl sits on a mat with straight legs doing yoga

Other Mamavation PFAS Testing Projects

Mamavation has been working hard to discover where to find PFAS “forever chemicals” inside the food & products we purchase and bring inside our homes. This is why we have decided to commission our own consumer studies on indications of PFAS in different consumer categories and share that information with you.

If you are here to find out what workout leggings are free from detectable PFAS, you may also be interested in our other similar studies.

  • Soft Contact Lenses
  • Green Beauty Makeup
  • Dental Floss
  • Toilet Paper
  • Period Underwear
  • Tampons
  • Sanitary Pads, Pantiliners, & Incontinence Pads
  • Powdered Electrolytes
  • Butter Wrappers
  • Pasta & Tomato Sauces
  • Nut Butters (Peanut butter, etc.)
  • Cooking Oils (olive oil, almond oil, canola oil, etc)
  • Ketchup
  • Activewear (Yoga Pants)
  • Sports Bras
  • Parchment Paper
  • Cupcake Liners
  • Plastic-Free Straws
  • Fast Food Packaging
  • Children’s Probiotics
  • Kids’ Backpacks
  • Baby Strollers

We also have other investigations you may like.

  • Best Yoga mats 
  • Best Organic Mattresses
  • Best Air purifiers
  • Best Cookware
  • Best Plant Milks
  • Best Water Filters for PFAS Filtration
  • Best Collagen
  • Best Electrolyte Replacement Drinks, Sports Drinks, & Coconut Water
  • Best Infrared Saunas

Stick around because later this month we will be releasing our sports bra investigation with similar testing! We’ve looked into all the athletic wear, including what you would wear on top!

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Reader Interactions

Comments

  1. Sprunki phase 8

    May 10, 2025 at 4:15 pm

    This post is such an eye-opener! I had no idea that “forever chemicals” were so prevalent in workout leggings. I appreciate the detailed guide on how to choose safer, non-toxic activewear. It’s definitely made me rethink my workout wardrobe. Thank you for spreading awareness on this important issue!

    Reply
  2. Drift Hunters

    April 15, 2025 at 7:20 pm

    It’s scary to know that the leggings and yoga pants we wear every day to improve our health can actually be harming us in the long run.

    Reply
  3. igrice

    March 16, 2025 at 12:49 pm

    What about athleta?

    Reply
  4. Fran

    February 16, 2025 at 6:16 pm

    Would also like to see Quince leggings tested; thanks so much for all your articles!

    Reply
  5. backoffice accountants

    January 14, 2025 at 1:44 am

    When you use our Back Office Accounting Specialists, Inc., you don’t need to bear overhead expenses and other expenses given in para above. You just have to pay the predetermined agreed lump sum fees or predetermined agreed per hourly fees. There is no other hidden cost in outsourcing model.

    Reply
  6. Jeffrey

    January 10, 2025 at 7:27 pm

    Your blog has become one of my favorite sources for actionable advice. This post was clear, concise, and packed with practical tips that I can implement right away. Thank you for your dedication to creating valuable content. Keep up the great work!

    Reply
  7. Renee Bautista

    November 15, 2024 at 6:14 pm

    I love and highly recommend the organic cotton leggings from Happy Earth! I have 3 pairs and they are so cozy and come in great colors, most all the clothes are organic and super comfortable and I love the nature vibe.

    Reply
  8. Gym

    October 2, 2024 at 5:48 pm

    Do you have any recommendations on PFAS free or non-toxic workout equipment? Lots of gym equipment seems to contain toxic chemicals.

    Reply
  9. Gabriel Sovereign

    May 14, 2024 at 5:15 pm

    Could you clarify which Old Navy athletic pants? I searched Old Navy’s website for “Athletic” pants and got a lot of different hits for pants with the word “athletic” in the title.

    Reply
  10. Anonymous

    May 14, 2024 at 5:14 pm

    This article is a little confusing. It states that Old Navy Athletic pants as high in PFAS but did not clarify which athletic pants. I di

    Reply
  11. AM

    March 7, 2024 at 2:16 pm

    Since you are called “Mama”vation, hoping you can dedicate a post to testing maternity leggings?
    Specifically Gap/Old Navy “Maternity Full Panel Elevate Powersoft 7/8-Length Leggings.” Reading reports that 95% of Gap products are PFAS-free as of May 2023. Would like to see if that’s true
    https://finance.yahoo.com/news/gap-inc-esg-progress-report-134828006.html

    Reply
  12. Betsy

    February 28, 2024 at 9:17 am

    Could you please test out several pieces of H&M sports clothing? I’ve heard that it’s free from PFAS.

    Reply
  13. Cathy

    February 8, 2024 at 8:47 am

    Thank you for keeping us informed!

    Reply
  14. Remo Roy

    February 8, 2024 at 7:58 am

    Thanks for sharing this information.

    Reply
  15. Michelle

    February 6, 2024 at 6:30 pm

    Have you tested the CRZ Yoga Butterluxe leggings on Amazon? They’re supposed to be a dupe to the Lululemon align leggings, but slightly different and I am curious if they’re okay to wear.

    Reply
  16. sarah324

    February 1, 2024 at 5:05 pm

    Are the brands names buff bunny and aurora ok brands to wear?

    Reply
  17. Stacy

    January 6, 2024 at 9:28 am

    Could you test Alo Yoga Airlift leggings as well?

    Reply
    • Olimpia Mandoudis

      January 14, 2024 at 4:51 pm

      They tested a pair. It ended up in the better category. Good to know!

      Reply
  18. Kristin

    December 24, 2023 at 4:23 pm

    I would like to add Ryderwear to the list to be tested as well 🙂 Thanks!

    Reply
  19. Nickole

    December 2, 2023 at 3:17 pm

    None of these brands cater to plus size…. Shame.

    Reply
    • Julie Oehlert

      May 3, 2024 at 9:25 am

      Mate the label does

      Reply
  20. Chaleen

    August 18, 2023 at 6:23 pm

    Hi! Can you test Womens Best leggings please.

    Reply
  21. gabriela

    July 8, 2023 at 2:05 pm

    Does AE & Aerie have any toxins

    Reply
    • Carrie

      October 2, 2023 at 4:58 pm

      Yes,I second this! what about ae and aerie?

      Reply
    • Mojo

      June 8, 2024 at 8:58 am

      I’m here curious about aerie leggings also!

      Reply
  22. maiklusa

    June 21, 2023 at 7:31 pm

    Very cool, Bin begeistert von euren Touren, thank you.

    Reply
  23. Debra Butler

    May 17, 2023 at 1:09 pm

    What about RBX brand?

    Reply
  24. Linda

    May 17, 2023 at 1:38 am

    When practicing sports, especially yoga, you need to find clothes with cool, stretchy and close-fitting materials for easy activities. slither io

    Reply
  25. slither io

    May 17, 2023 at 1:38 am

    When practicing sports, especially yoga, you need to find clothes with cool, stretchy and close-fitting materials for easy activities.

    Reply
  26. Holly

    May 12, 2023 at 6:49 am

    Thank you so much for this vital vital work.

    Can you please test the following brands:

    Member’s Mark (Sam’s club) activewear/leggings
    Lilly Pulitzer luxletic leggings
    Target All in Motion leggings

    Reply
  27. SM

    May 3, 2023 at 12:54 pm

    Can you test the new period underwear? The knix leakproof underwear and other brands!? I’m wondering now that you’ve found this in Knix brand already.

    Thanks so much for the awareness- I never thought about this.

    Reply
  28. lex

    April 26, 2023 at 4:24 pm

    Hi,

    This is so interesting but now I’m wondering if there is any way to test Lululemon underwear? How do we know if that’s safe?

    Reply
  29. Maggie

    March 22, 2023 at 12:02 pm

    Can you all test the spandex alternative fabric, called Sorona?

    Interested if it’s all it’s cracked up to be and safer than many spandex-laden clothes.

    Reply
  30. Emily

    February 7, 2023 at 2:18 pm

    What about Girlfriend Collective? They consider themselves sustainable because they make leggings from recycled water bottles but I also wondered if this means PFAS..

    Reply
    • Megan

      February 10, 2023 at 7:43 am

      Would be great if you could look into Hyba from Reitmans. It’s incredibly comfortable so I own quite a bit of their product line.

      Reply
    • Anonymous

      May 2, 2023 at 11:34 am

      its on the good list!

      Reply
  31. Morgan

    January 17, 2023 at 1:16 pm

    Would love to see Beyond Yoga assessed as well. Thank you for all you do!

    Reply
    • Jennifer Hlavac

      February 8, 2023 at 8:14 pm

      Same !!! Yes please!

      Reply
      • Cheryl

        April 15, 2024 at 7:41 am

        Very curious about colorfulkoala!

        Reply
    • JJ

      March 9, 2023 at 3:51 pm

      Yes!!

      Reply
    • Sea Agape

      April 5, 2023 at 3:32 pm

      Me too, beyond yoga and Yummie brand leggings and tops!!

      Reply
    • Lindsay M

      November 20, 2023 at 4:56 pm

      Would also love to see this!

      Reply
    • Amanda Marcus

      February 25, 2024 at 9:36 am

      Yes- please tweet Beyond Yoga

      Reply
    • Anonymous

      September 28, 2024 at 3:18 pm

      I reached out to beyond yoga directly, and they cannot comment that they do not have PFA in their products. Which means they do.

      Reply
    • Rebecca

      September 28, 2024 at 3:19 pm

      I reached out to beyond yoga directly, and they cannot comment that they do not have PFA in their products. Which means they do.

      Reply
  32. C

    November 30, 2022 at 2:08 pm

    What, I can’t go on without my Lululemon aligns, can I still wear them?

    Reply
  33. Holly

    April 28, 2022 at 4:17 pm

    I love that Love Her Shop also does not use PFAS.

    Reply
  34. Ava Miller

    April 13, 2022 at 9:59 pm

    Hey, your blog is very impressive and informative, I have lots of varieties of clothes, few of them are so itchy. I feel uncomfortable wearing them now. After reading your article I know the reason why I was facing these sorts of problems. I was not aware of the “PFAS” chemical. Thank you for providing information like this

    Reply
  35. Bob's Roommate

    February 24, 2022 at 6:23 am

    Keep in mind that the research tested for organic fluorine. While it can be an indicator of PFAS, it also accounts for other fluorochemicals, such as pesticides used to treat material crops and finished product prior to shipping. Some of those chemicals can be present in much higher concentrations than PFAS. Although they are not ideal in the crotch, either, it would be imprudent to conclude that PFAS are the only concerning fluorinated chemicals from this study.

    Reply
  36. Joanne Coogan

    February 18, 2022 at 3:24 am

    Are the brands names buff bunny and aurora ok brands to wear?

    Reply
    • Jen

      May 28, 2023 at 4:22 pm

      Please all test Free People Movement line. Specifically the Good Karma leggings. Thank you!

      Reply
    • Annie

      February 13, 2024 at 8:50 am

      Thank you for everything you are doing.

      What about Danskin wear?

      Reply
  37. Victoria

    February 8, 2022 at 4:31 am

    Ok…So…like all my workout clothes are Old Navy sweat wicking sort of fabric and my bras too. I went all in on them in the last year and threw out all my others because I decided ON does the best on fit and quality construction. I have like 4 pairs of high rise bike shorts, 4 pairs of high rise compression leggings, and around 8 sports bras for varying workout intensity. The bras are much the same material as the pants. For the sake of the study…it says “Old Navy Workout Pants.” Could someone elaborate on what was tested? I’m trying to decided if I feel like I need to toss out…literally everything I have to workout in.

    Sorry for the typos before… I’m feeling traumatized and afraid to workout.

    Reply
  38. Victoria

    February 8, 2022 at 4:29 am

    Ok…So…like all my workout clothes are Old Navy sweat wicking sort of fabric and my bras too. I went all in on them in the last year and through out all my others because I decided ON does the best on fit and quality construction. I have like 4 pairs of high rise bike shorts, 4 pairs of high rise compression leggings, and around 8 sports bras for varying workout intensity. The bras are much the same material as the paints. For the sake of the study…it says “Old Navy Workout Pants.” Could someone elaborate on what was tested? I’m trying to decided if I feel like I need to toss out…literally everything I have to workout in.

    Reply
  39. Mary Bemis

    January 31, 2022 at 7:56 am

    This is really important information – thank you for sharing this test! I wanted to also share an organic/sustainable option that makes plant-based organic leggings: http://www.repriseactivewear.com

    Reply
  40. Alden

    January 28, 2022 at 1:24 pm

    This is fascinating. I was wondering: what kind of test was used on the leggings? Was it an extraction or digestion test – the former would mimic what would happen if you sweat in the leggings, while the latter destroys the material and measures total fluorine in them. And the lab, do they usually test textiles, or do they test to Oeko-Tex standards? Can you share the name of the lab? I’m just wondering if this can be compared to textile limits used by brands and companies like Afirm. Did the lab share what it considers a “non-detect” with you? Also, are any of the brands or products you tested Oeko-Tex Standard 100 certified? I know this is a lot of questions – I do want to understand the overall context and implications of these test results! Thank you.

    Reply
  41. Bob

    January 24, 2022 at 9:48 pm

    PFAS are an issue, but not in leggings ????. Actually companies wouldn’t use PFAS on legging fabric because it’s makes them dry slower and does the opposite of wick sweat.

    Reply
    • rvlry

      January 26, 2022 at 11:38 am

      The article clearly states they used a lab to test these, did you?

      Reply
  42. Stephanie

    January 21, 2022 at 5:30 am

    I love this article, especially because I used to own some of the “worst” brands. Is there a chance this test could be done again on more popular brands (Fleo, KFT Brands, Constantly Varied Gear, Flag Nor Fail, HVIII)? I know a lot of these brands have gained popularity within the last 5 years, so I’m curious where they fall as well. So glad I switched to mostly eco friendly cruelty free brands.

    Reply
    • Alexander McLean

      December 22, 2022 at 2:02 pm

      This.

      Reply
    • Renee Wolan

      October 17, 2024 at 8:46 pm

      What about athleta? Did I miss that?

      Reply

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