Kelty · Waterproof Outdoor Gear
Kelty Trekker 65L Backpack
Backpack likely treated for water resistance; PFAS status unknown.
Kelty does not disclose PFAS content or water-repellent coating chemistry for this pack. Standard outdoor backpack water-repellent coating coatings often use fluorochemicals; verification needed before purchase.
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Material
Nylon fabric with water-repellent coating (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
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 Kelty Trekker 65L uses nylon fabric, a synthetic polymer that is durable and lightweight but typically requires a water-repellent coating (water-repellent coating) coating to shed moisture. water-repellent coating treatments historically relied on PFAS-based compounds, though some manufacturers have begun switching to PFAS-free alternatives. The nylon itself is stable and not a direct hazard, but the identity and durability of the water-repellent coating is critical to assessing chemical risk over the backpack's lifespan.
The brand's record and disclosure
Kelty, owned by Johnson Outdoors, does not publicly disclose water-repellent coating treatment chemistry or PFAS phase-out commitments on this product line. No recalls or chemical controversies are on record for this specific backpack. The brand's silence on water-repellent coating composition means you cannot confirm whether PFAS-based or PFAS-free treatments were used, limiting informed choice.
How it compares in its category
Most mid-range hiking backpacks in this size use nylon with water-repellent coating treatment. Brands like Osprey and REI Co-op have published PFAS phase-out timelines; Kelty has not. The Trekker 65L is functionally typical but sits behind competitors in chemical transparency. Ultralight alternatives using uncoated or minimally treated nylon exist but offer less water resistance.
If you buy it
Rinse the backpack gently when heavily soiled to reduce water-repellent coating residue contact and avoid unnecessary ingestion of coating particles. Avoid machine washing, which degrades the water-repellent coating layer faster and may leach treatment chemicals into water. Store in a cool, dry place away from heat, as high temperatures can accelerate coating breakdown. Replace when the water-repellent coating visibly fails (water beads no longer, saturation occurs) or after 5-7 years of heavy use; washing accelerates this timeline.
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.”
PFAS in water-repellent coating treatment (graded separately)
Nylon backpacks commonly use PFAS-based water-repellent coating coatings for water resistance. Kelty does not disclose the chemistry; PFAS exposure is most likely through skin contact and potential inhalation if coating degrades or is abraded. Risk is low during normal outdoor use but increases with poor storage or mechanical wear.
Azo dyes in nylon fabric
No recall or testing record exists for azo dyes in Kelty backpacks. Standard commercial nylon rarely uses problematic azo dyes in finished goods, though no independent testing of this specific product has been published. Risk is theoretical and low for apparel-grade nylon.
Formaldehyde resins in fabric finishing
Nylon backpack fabric may receive minor formaldehyde-based finishes for wrinkle resistance or water blocking, but published data on Kelty products is absent. Formaldehyde off-gassing from new outdoor gear is generally minimal and dissipates within weeks of exposure to air.
Antimony in polyester trim or webbing
The Trekker 65L likely includes polyester webbing for straps and reinforcement. Antimony trioxide is a standard catalyst in polyester production; no brand testing or recall exists for this backpack, but the hazard is present in most nylon-polyester hybrid packs at background levels. Dermal exposure during normal wear is very low.
water-repellent coating degradation and reapplication safety
Consumer reapplication of water-repellent coating products (spray or wash-in) introduces uncertainty about chemical identity and safety. Many retail water-repellent coating refreshers are PFAS-based. If you retreat this backpack, confirm the product composition or choose PFAS-free alternatives to avoid compounding chemical exposure.
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
Patagonia
Refugio Day Pack 26L
recycled nylon with non-fluorinated water-repellent coating treatment
Lower PFAS concern. Patagonia claims non-fluorinated water-repellent coating on this pack.
⚠Waterproof or stain-proof treatment
More waterproof outdoor gear 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.