Watershed · Waterproof Sports Bags
Watershed Animas Backpack Dry Bag Smoke Green
Dry bag with unspecified waterproof coating; PFAS risk unclear.
Watershed dry bags use durable coatings to repel water, but the brand does not publicly disclose PFAS status or chemistry. Standard TPU coatings are lower concern than legacy water-repellent coating treatments, though coating specifics remain unknown.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
TPU-coated nylon (presumed)
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 Animas Dry Bag uses TPU (thermoplastic polyurethane) coating applied to nylon base fabric. TPU itself is not inherently hazardous, but the waterproofing layer's chemical additives are unknown without full manufacturer disclosure. Watershed does not publicly specify whether their TPU coating contains fluorinated compounds (C6/C8 PFAS), non-fluorinated alternatives, or legacy Teflon-type coating. This opacity is the primary safety concern for this product, since waterproof coatings are a known PFAS application.
The brand's record and disclosure
Watershed is a US-based specialist in waterproof gear with no major recalls or safety controversies on public record for this product line. However, the brand maintains silence on PFAS content and coating formulation, providing no third-party test results or commitment to PFAS-free production. No published certifications (e.g., Bluesign, OEKO-TEX) have been found for this model. This lack of transparency is atypical compared to outdoor brands that now routinely disclose or avoid PFAS in technical fabrics.
How it compares in its category
Dry bags occupy a middle ground: less scrutinized than cookware or cosmetics, but increasingly subject to PFAS scrutiny because waterproofing is a primary use case for fluorinated chemicals in textiles. Leading competitors (e.g., Sea to Summit, Ortlieb) have begun publishing PFAS-free or low-fluorine claims; Watershed's silence suggests either standard Teflon-type coating/PFAS coatings or reluctance to market alternatives. Nylon-TPU bags are durable and perform well mechanically; the hazard is chemical, not durability.
If you buy it
Rinse the bag after purchase to remove loose coating particles or residual chemicals. Avoid prolonged contact with skin, especially wet skin, as TPU coatings can hydrate and leach additives under moisture and heat. Store in a cool, dry place away from direct sunlight, which degrades TPU over time and may increase leaching. Do not wash in hot water or bleach; cold water and mild soap only. Replace if visible delamination or cracking occurs, as this signals coating breakdown and potential particulate release.
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.”
TPU coating additive leaching (PFAS and non-fluorinated plasticizers)
TPU coatings commonly contain phthalate plasticizers or undisclosed fluorochemicals to maintain flexibility. No test data is publicly available for the Animas model specifically, but the manufacturer's silence on coating chemistry suggests use of conventional formulations, which often include PFAS. Leaching risk is highest during wet use or storage in warm conditions.
Coating degradation and microparticle release
TPU-nylon coatings degrade under UV exposure, mechanical flex, and temperature cycling. As the coating breaks down, small particles may shed into contents or onto skin during contact. No specific data on the Animas coating longevity exists, but this is a known failure mode for TPU bags after 2-5 years of heavy use.
Formaldehyde-based resins in nylon weave preparation
Nylon fabrics are sometimes treated with formaldehyde resins for sizing or wrinkle resistance. No formaldehyde concerns have been documented for Watershed products or this model. Typical nylon dry bags are not formaldehyde-intensive applications, but complete material data sheets are unavailable.
Azo dyes in Smoke Green color
The Smoke Green colorway could theoretically use azo dyes, which can break down into carcinogenic amines. No safety incident or test result is on record for Watershed's dye choices. Standard outdoor industry practice now favors reactive or chrome dyes, but manufacturer confirmation is not available.
Volatile organic compounds (VOCs) from coating solvent residue
TPU coatings are typically applied with solvent carriers that off-gas during and after manufacturing. A new Watershed bag may emit mild chemical odor for days or weeks. This is not acutely hazardous but indicates incomplete solvent removal and warrants airing in a ventilated space before first use.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% 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.