Non-Toxic Waterproof Sports Undergarments, ranked by PFAS grade
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
All 52 waterproof sports undergarments PFAS Authority has graded score below its 70 point pass mark for PFAS and other toxins, as of November 2026.
The full ranking is below, best-graded first, with every score linking to the evidence behind it. Nothing here clears our buy threshold yet, so the least-concerning options come first.
Are waterproof sports undergarments safe?
None of the 52 waterproof sports undergarments we graded come back low-concern on our screen. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.
Best graded waterproof sports undergarments here
- 1Calvin Klein Men's Intense Power Sport Tee 65 out of 100
- 2Calvin Klein Women's Double Logo High Hip T-Shirt 65 out of 100
- 3Carhartt Men's Force Relaxed Fit Short-Sleeve Pocket T-Shirt 65 out of 100
Start here
The best non-toxic waterproof sports undergarments, ranked by grade
Why Calvin Klein Men's Intense Power Sport Tee grades highest here, and why that is not a pass
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 2 products it beats, so you can see exactly where the 45 points between the top and the bottom of this waterproof sports undergarments ranking come from. Nothing in this category reaches our 70 point pass mark, so this is the shape of the field rather than a recommendation.
Top graded, and still below our pass mark
Made of Cotton-blend knit jersey, uncoated.
- +30Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
35risk points in total, which is a grade of 65
What the grade does not fix. It still carries one risk factor, No PFAS disclosure, and our graders recorded 3 other hazards on it. See the full breakdown.
What it still grades above, and why
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The top-graded product carries no such factor.
Made of polyester blend with Dri-FIT moisture-wicking treatment.
- +35Waterproof / stain-resistant treatment
- +30Category baseline
- +15No PFAS disclosure
80risk points, a grade of 20
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The top-graded product carries no such factor.
Made of Synthetic blend with moisture-wicking and UPF treatment.
- +35Waterproof / stain-resistant treatment
- +30Category baseline
- +15Vague safety claims only. Uses vague language ("eco-friendly", "clean") without a specific PFAS statement.
80risk points, a grade of 20
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
Which waterproof sports undergarments contain PFAS? Poor and Bad, we’d swap these
- Cotton-blend knit jersey, uncoated
- We found no PFAS statement from the brand
- Azo dyes and synthetic colorants
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- cotton jersey, no applied finish
- We found no PFAS statement from the brand
- Azo dyes and colorant residues
2 hazards checked on this product, all on its full breakdown.
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- 100% cotton jersey knit, untreated
- We found no PFAS statement from the brand
- Azo dyes
2 hazards checked on this product, all on its full breakdown.
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- 100% cotton, no water-repellent finish
- We found no PFAS statement from the brand
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
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- 100% cotton jersey
- We found no PFAS statement from the brand
- Azo dyes and banned colorants
2 hazards checked on this product, all on its full breakdown.
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- 100% cotton long-sleeve shirt
- We found no PFAS statement from the brand
- Azo dyes and dye residuals
2 hazards checked on this product, all on its full breakdown.
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- Polyester athletic knit, no specified water-repellent coating treatment
- We found no PFAS statement from the brand
- Azo dyes and colorant toxicity
4 hazards checked on this product, all on its full breakdown.
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- polyester blend athletic shirt, no stated coating
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
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- Nylon, spandex blend
- We found no PFAS statement from the brand
- Azo dyes
3 hazards checked on this product, all on its full breakdown.
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- polyester mesh singlet
- We found no PFAS statement from the brand
- Azo dyes and color fastness
2 hazards checked on this product, all on its full breakdown.
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- nylon/spandex blend
- We found no PFAS statement from the brand
- Azo dyes and synthetic dye residues
3 hazards checked on this product, all on its full breakdown.
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- polyester mesh and knit fabric
- Azo dyes and synthetic colorants
3 hazards checked on this product, all on its full breakdown.
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- polyester/nylon athletic blend
- Azo dyes and synthetic colorants
3 hazards checked on this product, all on its full breakdown.
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- polyester blend with moisture-wicking treatment
- Formaldehyde / VOCs
5 hazards checked on this product, all on its full breakdown.
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- polyester/cotton blend, no specified coating
- Heavy metals
4 hazards checked on this product, all on its full breakdown.
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- Cotton/polyester blend, no reported treatment
- Formaldehyde / VOCs
2 hazards checked on this product, all on its full breakdown.
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- polyester/nylon blend, no water-repellent coating treatment disclosed
- Formaldehyde / VOCs
3 hazards checked on this product, all on its full breakdown.
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- Polyester blend performance fabric
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
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- polyester blend athletic knit
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
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- polyester/cotton blend, standard knit
- Azo dyes and residual dye chemicals
4 hazards checked on this product, all on its full breakdown.
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- polyester blend fabric, no special coating
- Heavy metals
4 hazards checked on this product, all on its full breakdown.
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- woven polyester/nylon blend athletic fabric
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- polyester mesh singlet
- We found no PFAS statement from the brand
- Azo dyes and residual colorants
5 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Polyester blend (Cloudspun fabric)
- Azo dyes and dye-related allergens
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon- 65Puma x Hyrox Move Women's Bra
- 65Saucony Men's Fortify Tight
- 20Nike Men's Dri-FIT Ready Fitness T-Shirt
- 20Nike Women's Swift Breathe Dri-FIT Running Tank Top
- 20Calvin Klein Plus Womens Moisture Wicking Workout Pullover Top
- 20Carhartt Men's Force Logo Sweatshirt
- 20Nike Men's Dri-FIT Pro Tight Sleeveless Fitness Top
- 20Nike Men's Primary Dri-FIT Versatile Tank Top
- 20Calvin Klein Men's Light Weight Quick Dry Moisture Wicking Top with 40+ UPF Protection
- 20Carhartt Force Sub-Scrubs Performance Long Sleeve Tee
- 20Carhartt Men's Force 1/4-Zip Long Sleeve T-Shirt
- 20Carhartt Men's Force Sun Defender Relaxed Fit Lightweight Short-Sleeve Polo
- 20Nike Men's AeroSwift Dri-FIT ADV Short-Sleeve Running Top
- 20Nike Men's Stride Dri-FIT ADV Running Tank Top
- 20Nike Women's Swift High Support Sports Bra
- 20Nike Women's Nike Tempo Dri-FIT Running Top
- 20Puma Men's PWRMODE Full Length Tight
- 20Saucony Men's Outpace 5" Shorts
- 20Saucony Men's Runshield Tight
- 20Tommy Hilfiger Men's Performance Hooded Jacket
- 20Tommy Hilfiger Men's Regular Fit Performance Shirt
- 20Tommy Hilfiger Men's Regular Fit Tommy Wicking Polo
- 20Tommy Hilfiger Men's TH Performance Straight Fit Pants
- 20Tommy Hilfiger Men's Regular Fit Performance Jersey Polo
- 20Tommy Hilfiger Men's Regular Fit TH Performance Tech Polo
- 20Calvin Klein Men's Dress Shirt Slim Fit Non Iron
- 20Tommy Hilfiger Men's Regular Fit Wicking Polo
- 20Tommy Hilfiger Men's TH Performance Lightweight Polo
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