Swimwear, ranked by PFAS safety
30 products graded from Bad to Excellent, safest first. None grade Good or better yet, so we show the full ranking and the least-concerning options first.
Start here
The best non-toxic swimwear, ranked safest first
Graded and flagged Poor and Bad, we’d swap these
Speedo
Women's Eco Solid Adult Super Pro Swimsuit
Polyester/nylon blend (standard swimsuit fabric)
Lower concern, typical swimwear without known water-repellent treatment, though Speedo has not disclosed PFAS avoidance.
⚠Risky category by default
Patagonia
Women's Bottom Turn Racerback Bikini Top
Nylon/polyester blend with elastane (standard swimwear)
Lower concern, basic swimwear without water-repellent coating, though Patagonia's broader PFAS practices warrant review.
⚠Risky category by default
Aerie
String Triangle Bikini Top
nylon/polyester blend (standard swimwear)
Lower PFAS concern, untreated swimwear unlikely to require water-repellent coating chemicals.
⚠Risky category by default
Aerie
Skinny Strap Voop Bikini Top Women's NULL
nylon/spandex blend (standard swimwear)
Lower concern, standard swimwear with no water-repellent coating treatment flagged; Aerie has not publicly committed to PFAS elimination.
⚠Risky category by default
Aerie
Skinny Strap Voop Bikini Top
Nylon/spandex blend (standard swimwear)
Lower PFAS concern for basic swimwear, though standard industry practice remains opaque.
⚠Risky category by default
Aerie
Crossover High Waisted Bikini Bottom
Nylon/spandex blend (standard swimwear fabric)
Lower concern, basic swimwear with no known PFAS triggers, but brand provides no transparency.
⚠Risky category by default
Aerie
Skinny Strap Voop Ribbed Bikini Top
nylon/spandex blend (typical swimwear)
Lower-concern swimwear; no PFAS treatment typical for basic bikini tops, but brand offers no transparency.
⚠Risky category by default
Aerie
Wide Strap Voop Bikini Top
nylon/polyamide blend with elastane
Lower concern, standard swimwear without known PFAS triggers, but no brand transparency.
⚠Risky category by default
Aerie
Ribbed Tankini Bikini Top
Nylon/polyester blend (typical swimwear)
Lower concern, standard swimwear fabric with no known PFAS drivers, but no brand transparency.
⚠Risky category by default
Aerie
Strappy Full Coverage One Piece Swimsuit Women's
Nylon/polyester blend swimwear, no specified water-repellent coating
Lower concern, standard fabric swimsuit with no known water-repellent treatment; Aerie makes no PFAS claims either way.
⚠Risky category by default
Summersalt
Plus Size Sidestroke Swimsuit
Nylon/polyester blend (standard swimwear knit)
Lower PFAS concern for basic swimwear; no evidence of problematic coatings, but brand transparency is absent.
⚠Risky category by default
Speedo
Women's Aquablade Recordbreaker One-Piece Swimsuit
Polyester blend with water-repellent coating treatment (likely Teflon-family coating-based)
PFAS
High concern
Antimony catalyst in polyester
Limited concern
Elastane/spandex degradation over time
Moderate concern
Coating degradation and leachables
Limited concern
Moderate PFAS risk from likely water-repellent coating; contact Speedo before buying.
⚠Waterproof or stain-proof treatment
Speedo
Women's Endurance+ Medalist Swimsuit
Polyester with water-repellent coating finish
PFAS
Limited concern
Microplastic shedding during use and laundering
Limited concern
No PFAS disclosure on water-repellent coating treatment; many rival brands now disclose.
⚠Waterproof or stain-proof treatment
Speedo
Women's Moderate Ultraback PowerFLEX One Piece Swimsuit
Polyester/nylon blend with water-repellent coating (water-repellent coating) finish
PFAS
Limited concern
Antimony in polyester fibers
Limited concern
Microplastic shedding from fiber breakdown
Limited concern
Avoid unless Speedo confirms PFAS-free water-repellent coating treatment.
⚠Waterproof or stain-proof treatment
Rip Curl
Women's Rip Curl Classic Surf Swimsuit
Nylon/polyester blend with water-repellent coating finish
PFAS
Moderate concern
Formaldehyde / VOCs
Limited concern
Azo dyes in color fastness
Limited concern
Microplastic shedding from fiber degradation
Limited concern
Moderate concern; typical surf swimsuit with nondisclosed water-repellent treatment.
⚠Waterproof or stain-proof treatment
Rip Curl
Women's Surf Stripe UPF Surf Suit
Polyester blend with water-repellent coating (water-repellent coating) treatment
water-repellent coating (water-repellent coating) chemical composition - undisclosed
High concern
Microplastic shedding from polyester fibers
Limited concern
Avoid or ask Rip Curl directly; no PFAS disclosure on water-repellent swim item.
⚠Waterproof or stain-proof treatment
Rip Curl
Women's Premium Surf Short Jane Swimsuit
Nylon/polyester blend with water-repellent coating (water-repellent coating) finish
PFAS
High concern
water-repellent coating degradation and re-release
Limited concern
water-repellent coating swimwear typically contains PFAS; Rip Curl keeps details hidden; ask before purchase.
⚠Waterproof or stain-proof treatment
Patagonia
Women's Cross Shore One-Piece Swimsuit
Nylon/polyamide blend with water-repellent coating treatment
PFAS
Limited concern
Spandex degradation and microfiber shedding
Limited concern
Avoid until Patagonia discloses or certifies water-repellent coating chemistry.
⚠Waterproof or stain-proof treatment
Patagonia
Women's Long Sleeved Swell Seeker One Piece Swimsuit
Nylon/polyamide with water-repellent coating (water-repellent coating) finish
PFAS
High concern
Formaldehyde / VOCs
Limited concern
Microplastic shedding from synthetic fiber
Limited concern
Swimsuit probably treated with PFAS-based water-repellent coating; Patagonia silent on PFAS.
⚠Waterproof or stain-proof treatment
Patagonia
Women's Sunny Tide One-Piece Swimsuit
Nylon/polyester blend with water-repellent coating treatment
PFAS
High concern
Synthetic microfiber shedding
Moderate concern
Formaldehyde / VOCs
Limited concern
Degradation of coating over time
Moderate concern
water-repellent coating-coated swimsuit material unknown; Patagonia silent on PFAS.
⚠Waterproof or stain-proof treatment
Athleta
Swim Athleta Aqualuxe Square Plunge One Piece Swimsuit
Nylon/spandex blend with water-resistant treatment
PFAS
High concern
Elastane (spandex) microfiber shedding
Limited concern
Coating degradation and leachables over use
Limited concern
Sensitization to treatment chemicals
Limited concern
Avoid until brand discloses water-repellent chemistry; coatings often contain PFAS.
⚠Waterproof or stain-proof treatment
Athleta
Womens Aqualuxe Plunge One Piece
Nylon blend with water-repellent coating water-repellent finish
PFAS
High concern
Formaldehyde / VOCs
Limited concern
Microfiber shedding
Limited concern
Coating degradation and chemical release
Moderate concern
Avoid until Athleta discloses water-repellent coating chemistry or switches to PFAS-free.
⚠Waterproof or stain-proof treatment
Lands' End
Women's Tugless Long Sleeve Rash Guard One Piece Swimsuit
Nylon/polyester blend with water-repellent coating treatment
water-repellent coating (water-repellent coating) finish chemistry, unknown fluorine content
Limited concern
Microplastic shedding during washing
Limited concern
Avoid unless Lands' End discloses water-repellent coating chemistry; rash guards typically use fluorinated water repellents.
⚠Waterproof or stain-proof treatment
Lands' End
Women's Tugless High Neck Portrait Back One Piece Swimsuit
Nylon/spandex blend with water-resistant finish
PFAS
High concern
Spandex elasticity loss over time
Limited concern
Skin irritation from dye migration or finish residue
Limited concern
Microplastic shedding from coating or fiber breakdown
Limited concern
Moderate PFAS concern from likely water-repellent coating treatment; Lands' End provides no disclosure.
⚠Waterproof or stain-proof treatment
- 20Lands' End Women's Lands' End DD-Cup New SlenderSuit Wrap One Piece Swimsuit
- 20Lands' End Lands' End Women's Tugless X-Back One Piece Swimsuit
- 20Speedo Speedo Women's Quantum Fusion One Piece Swimsuit
- 20Speedo Speedo Women's Ultraback One Piece Swimsuit
- 20Rip Curl Rip Curl Women's Classic Surf One-Piece Swimsuit
- 20Rip Curl Rip Curl Women's Bossa Nova One-Piece Swimsuit
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