Marmot · Waterproof Outdoor Gear Bags
Marmot Kompressor Comet Backpack
Backpack uses water-repellent coating treatment; Marmot silent on PFAS composition.
Marmot's Kompressor Comet uses durable nylon with water-repellent durability treatment, typical in outdoor gear. The brand makes no public disclosure about PFAS content or water-repellent coating chemistry, limiting confidence in safety assessment.
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Material
nylon fabric with water-repellent coating water-repellent coating
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 Kompressor Comet uses nylon fabric treated with a water-repellent coating (water-repellent coating) coating. water-repellent coating treatments historically contained long-chain PFAS, though many brands have shifted to fluorine-free alternatives in recent years; Marmot has not disclosed which type is used here. Nylon itself is stable and does not leach chemicals during normal use, but the coating's composition and longevity under UV and mechanical stress are the primary concern.
The brand's record and disclosure
Marmot is owned by Cascade Designs (a subsidiary of Helen of Troy) and has not made public commitments to PFAS phase-out or published ingredient disclosures for their water-repellent coating treatments. The brand does not appear on major PFAS-committed manufacturer lists (e.g., ZDHC Gateway certifications or bluesign standards). This silence means consumers cannot verify whether the backpack uses legacy PFAS or safer alternatives. No recalls or documented chemical safety incidents specific to Marmot backpacks are on record.
How it compares in its category
Most technical backpack brands use some form of water-repellent coating; Marmot's approach is standard for the price point and performance tier. Competitor brands like Patagonia and Arc'teryx have begun disclosing PFAS phase-outs or use certified fluorine-free water-repellent coating (e.g., Bluesign-approved coatings). The Kompressor Comet sits in a mid-market space where transparency lags behind premium outdoor brands. For a backpack at this price and function, the lack of disclosure is a relative weakness.
If you buy it
Store the backpack in a cool, dry place away from prolonged direct sunlight, which can degrade the water-repellent coating over time. Wash with cool water and mild soap if needed; avoid machine washing and heat drying, which can strip the coating and potentially release particles. Inspect the exterior regularly for peeling, cracking, or discoloration of the water-repellent coating layer, which signals coating breakdown. If the water-repellent coating noticeably fails (water no longer beads), consider retiring the bag or seeking re-treatment from a certified service that uses PFAS-free products.
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 degradation and particle release
Fluorinated water-repellent coating coatings can degrade through wear, UV exposure, and washing, potentially releasing microparticles or residual coating compounds. No specific testing of Marmot's coating durability or particle shedding is publicly available, but mechanical wear of nylon-based technical fabrics is well-documented.
Formaldehyde resins in nylon or finish treatments
Nylon fabric manufacturing can involve formaldehyde-based resins for wrinkle resistance or finish stabilization. Marmot does not disclose use of such agents in this product; no recalls or complaints attributable to formaldehyde are on record for this backpack model.
Azo dyes in fabric coloring
If the nylon is dyed with azo colorants, they can release aromatic amines under sweat or alkaline conditions, though this risk is low for backpack exterior fabrics. No testing or disclosure from Marmot regarding dye composition is available.
Contact dermatitis from water-repellent coating or dye residues
Residual coating or dye compounds on new fabrics can cause skin irritation in sensitive individuals, particularly if worn against bare skin. Standard practice is to wash the backpack or wear layers before extended contact.
Heavy metals in pigments (if exterior print/patches present)
Printed logos or decorative patches on outdoor gear can contain heavy metal pigments (e.g., cadmium-based inks). The Kompressor Comet's printed branding has not been tested; no public recalls exist, but disclosure is absent.
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 Outdoor Gear Bags
Marmot
Tool Box
Nylon, polyester, cotton blend; details unspecified
Toolbox, not garment. Check product specs for water-repellent coating.
⚠Risky category by default
More waterproof outdoor gear 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.