Patagonia · Waterproof Outdoor Gear Storage Bags
Atom Sling 8L Patagonia
Sling has water-repellent coating; Patagonia doesn't disclose PFAS status.
Patagonia Atom Sling uses durable nylon with water-repellent finish, likely water-repellent coating-treated. Brand provides no public PFAS transparency for this product.
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Material
Nylon fabric with water-repellent coating treatment
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
other 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 Atom Sling is constructed from nylon fabric treated with a water-repellent coating (water-repellent coating) finish. water-repellent coating coatings are applied to textiles to shed water without soaking through; historically many water-repellent coating treatments relied on PFAS "forever chemicals" (PFAS), though some brands have shifted to PFAS-free alternatives. Patagonia has not publicly disclosed the specific water-repellent coating chemistry used in this product, making the PFAS status unknown despite the company's general sustainability positioning.
The brand's record and disclosure
Patagonia has built a reputation for environmental responsibility and has committed to phasing out some PFAS-containing products. However, the company does not routinely disclose which specific products contain PFAS or which water-repellent coating chemistries are in use, leaving consumers unable to verify compliance with their stated goals. This lack of product-level transparency on a key hazard class is a notable gap for a brand marketing itself as a leader in consumer accountability. Patagonia has no major recalls or established safety violations related to this product category.
How it compares in its category
Nylon slings and day packs are standard carry gear; PFAS-free water-repellent coating alternatives (such as wax-based or thermoplastic polyurethane coatings) do exist and are used by some outdoor brands, though they may offer slightly lower water repellency or durability. Most mainstream outdoor bags, including competitor offerings from brands like Peak Design and REI Co-op, rarely disclose water-repellent coating chemistry either, so the Atom Sling is not unique in this transparency gap. If PFAS-free water-repellent coating is a priority, requesting product specifications directly from Patagonia or sourcing bags explicitly marketed as PFAS-free would be more assured approaches.
If you buy it
Wash the sling gently in cool water with mild detergent; avoid high heat and prolonged soaking, which can degrade the water-repellent coating and potentially increase leaching risk. Reapply water-repellent coating treatments as water repellency declines (typically after 1-2 years of regular use), using a product that matches your PFAS tolerance. Do not dry-clean; air-dry only. If PFAS exposure is a health concern for your household, contact Patagonia customer service to request water-repellent coating chemistry disclosure before purchase.
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.”
water-repellent coating composition (PFAS or alternative)
The product features a water-repellent finish whose chemical identity is undisclosed by the brand. While newer water-repellent coating technologies may avoid PFAS, nylon slings of this type historically used PFAS-based treatments; without product documentation, the risk cannot be ruled out.
Microfiber shedding from nylon
Nylon textiles do shed microfibers during washing and wear, particularly when abraded. No recalls or established toxicology specific to this sling exist, but repeated laundering may increase microfiber release; hand washing and air-drying minimize this.
Formaldehyde-based dyes or finishes
Nylon textiles can be treated with formaldehyde-releasing resins for wrinkle resistance or color fixation. No public data indicates this practice in the Atom Sling; Patagonia's manufacturing standards typically avoid formaldehyde, but confirmation is not disclosed for this specific product.
Heavy metal pigments (if colored)
Dyed nylon can theoretically contain trace heavy metals (e.g., cadmium, lead) in pigments, though modern textile dyes are tightly regulated. No recalls or testing issues are documented for Patagonia nylon products in this weight class.
Coating degradation and leaching during use
As water-repellent coating coatings wear, they can break down and shed particles or compounds. If the water-repellent coating contains PFAS, degradation over years of use could increase direct contact with skin or environmental release; regular inspection for flaking or peeling is prudent.
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.
More waterproof outdoor gear storage 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.