Arc'teryx · Waterproof Outdoor Gear Storage Bags
Arc'teryx Mantis 2 Waist Pack
water-repellent coating-treated nylon/polyester waist pack with no PFAS disclosure from Arc'teryx.
This waist pack has a water-repellent coating. Arc'teryx has no PFAS statement on record for this product. water-repellent coating treatments have historically used PFAS, though the chemistry of this specific coating is not stated.
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Material
Nylon/polyester with water-repellent coating
Lab data
No public lab test
What Arc'teryx Mantis 2 Waist Pack is made of, ingredients and materials
The Mantis 2 uses nylon and polyester as the base fabrics, neither of which leaches known toxins under normal use. The critical component is the water-repellent coating (water-repellent coating) coating applied to the exterior. Arc'teryx does not publicly disclose whether this coating uses legacy PFAS (PFOA, PFOS), next-generation PFAS, or fluorine-free alternatives. water-repellent coating coatings are the primary source of microplastic and chemical shedding in technical waist packs.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
PFAS
Arc'teryx's silence on fluorochemistry and the nylon/polyester base construction suggest conventional C6/C8 PFAS-based water-repellent coating is probable. These persist in the body and environment for decades.
Source, ATSDR ↗Microplastic shedding from degraded coating
As water-repellent coating breaks down over time (especially with laundering), nylon microfibers and coating fragments shed into wash water and may be inhaled during wear. Degree depends on use intensity and care.
Off-gassing from adhesives and trim
The pack may contain polyurethane adhesives and vinyl or plastic trim (zippers, webbing). New-product smell typical of outdoor gear is associated with VOCs; this dissipates within days of airing but reflects unverified chemical inputs.
What’s reassuring
Azo dyes in polyester/nylon fabric
Arc'teryx does not use bluesign certification or publish dye safety data. Standard polyester waist packs may contain azo dyes but no specific incidents are documented for this model or brand.
Formaldehyde / VOCs
Nylon and polyester do not typically require formaldehyde-based resins for water resistance. Arc'teryx finishes are not independently tested for formaldehyde content, but risk is lower than in cotton or blended textiles.
Source, ATSDR ↗The full breakdown
The brand's record and disclosure
Arc'teryx has not published a fluorochemical policy or third-party certifications (such as OEKO-TEX or bluesign) that would indicate PFAS-free manufacturing. The brand is silent on water-repellent coating chemistry across its product lines, which is common among outdoor gear makers but reflects a lack of transparency rather than safety assurance. No recalls or health incidents are on record for this model. The absence of disclosure should not be read as safety but as an unresolved supply-chain risk.
How it compares in its category
Most premium waist packs in this price range use similar nylon/polyester base materials with water-repellent coating coatings. Competitors like Patagonia and The North Face have also not consistently disclosed PFAS status, though some smaller brands now offer fluorine-free water-repellent coating options (e.g., Paragon, Millican). The Mantis 2's main differentiation is Arc'teryx's reputation for durability and water resistance, not chemical transparency. A fluorine-free alternative would carry identical functionality but lower chemical persistence risk.
If you buy it
Minimize skin contact by wearing long sleeves under the pack or using a protective layer. Launder infrequently and by hand in cool water rather than machine washing, which accelerates coating degradation and microplastic shedding. Do not dry-clean or use high heat. Avoid prolonged contact with infants or pregnant individuals. Replace the pack when the water-repellent coating visibly flakes or loses water beading, typically after 3-5 years of heavy use; degradation is when chemical leaching risk peaks.
What we don’t know
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Arc'teryx has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
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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.