PFAS score
ALPS Mountaineering · Sleeping Bags
ALPS Mountaineering Zenith Sleeping Bag
Skip until waterproofing method is disclosed, water-repellent coating coatings commonly use PFAS.
ALPS Mountaineering does not disclose the chemistry of the water-repellent coating applied to this sleeping bag's polyester shell. Most outdoor gear waterproofing uses PFAS-based durable water repellents. Without brand transparency or third-party testing, assume PFAS presence is likely.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polyester shell with water-repellent coating (water-repellent coating) coating; synthetic insulation
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.
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 Sleeping Bags
Enlightened Equipment
Convert Sleeping Quilt
Nylon or polyester shell with synthetic insulation
Lower concern, no inherent PFAS trigger, but brand provides no transparency.
⚠Risky category by default
Zpacks
Merino Wool Ultralight Sleeping Bag Liner
Merino wool, no applied water-repellent coating mentioned
Lower concern, merino wool liner with no reported water-repellent treatment is unlikely to contain PFAS.
⚠Risky category by default
Outdoor Vitals
Sleeping Bag Liner
Polyester or nylon fabric blend (no waterproof water-repellent coating typical)
Lower concern; simple liner without water-repellent finish reduces PFAS exposure risk.
⚠Risky category by default
More sleeping 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.