Nike · Waterproof Sports Bags
Nike Swim Repel Backpack
Swim backpack likely has water-repellent coating. Nike silent on PFAS.
Nike does not disclose PFAS or water-repellent coating chemistry for this backpack. Water-repellent textiles often contain PFAS; without confirmation, risk remains uncertain.
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Material
Polyester with water-repellent (water-repellent coating) finish
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
clothing is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
The Nike Swim Repel Backpack is polyester with a water-repellent coating (water-repellent coating) finish applied to the fabric surface. water-repellent coating coatings are typically Teflon-family coating-based (often PFAS) to achieve water shedding without absorbing moisture, which is essential for swim gear. Polyester itself is stable under normal use, but the water-repellent coating layer is where chemical concerns concentrate, particularly when the coating degrades or is exposed to high heat.
The brand's record and disclosure
Nike has not publicly disclosed whether this backpack uses legacy PFAS (like PFOA) or newer alternatives (like GenX or Teflon-type coating). The company has made some commitments to phase out problematic PFAS in certain product lines but remains silent on specific items like swim backpacks. This lack of transparency makes it impossible to verify whether the water-repellent coating treatment meets safer chemical standards. Consumer advocacy groups have flagged Nike gear as a category where PFAS disclosure lags behind some competitors.
How it compares in its category
Most water-repellent backpacks and swim bags use water-repellent coating finishes; few brands disclose PFAS status. Competitors like Arc'teryx and Patagonia have begun publishing PFAS phase-out timelines, while Nike has not adopted similar commitments for swim gear. Non-coated or wax-treated alternatives exist but are heavier and less practical for active swim use. Nike's silence puts this product in the middle of the transparency spectrum, neither better nor worse than typical mass-market swim backpacks.
If you buy it
Avoid washing in very hot water or machine drying, as heat can accelerate water-repellent coating degradation and potential leaching. Hand wash with cool water and mild soap if needed; air dry. Do not iron or expose to direct flame. The water-repellent coating typically lasts 30-50 wears before water-shedding declines; when it noticeably soaks water, replacement may be warranted rather than attempted re-treatment (which requires specialty coatings). Store in a dry place to prevent mold and bacterial growth in damp polyester.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Azo dyes in polyester fabric
No specific recalls or testing data for Nike Swim Repel backpacks regarding restricted azo dyes. Polyester textiles can carry azo-based colorants; Nike's supplier standards claim compliance with OEKO-TEX or similar, but this product does not advertise third-party certification.
Formaldehyde resins in fabric finishes
Polyester blends and finish layers sometimes use formaldehyde-based resins for wrinkle resistance or durability. No formaldehyde testing on record for this backpack. Risk is low during normal wear but possible if finish degrades or backpack is heavily heated.
Antimony in polyester
Antimony is occasionally used as a polyester catalyst. No specific data on this backpack, and levels in finished consumer goods are typically regulated below harm thresholds if present. Not a primary concern for external-use gear.
water-repellent coating breakdown and leaching
Water-repellent coatings degrade with repeated washing and wear, potentially releasing coating residues into wash water or onto skin. This is not acute toxicity but a mechanism by which PFAS or other coating chemicals can migrate. Rate and extent depend on the specific chemistry Nike uses, which is undisclosed.
Microplastics from fabric wear
Polyester sheds microfibers when abraded or washed. A backpack with heavy friction (straps, seams) may release small quantities over time. This is not unique to Nike but is a background concern for all synthetic textiles.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Waterproof Sports Bags
Garmin
Carrying Case
Neoprene or polyester case, material unspecified
Unknown material raises concern; no PFAS disclosure from Garmin.
⚠Risky category by default
Patagonia
Guidewater Sling
recycled polyester with water-repellent coating finish
Lower concern; brand committed to PFAS-free water-repellent coating, but verify current batch
⚠Waterproof or stain-proof treatment
More waterproof sports bags grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.