Black Diamond · Waterproof Outdoor Gear
Black Diamond Blitz 20 Backpack
Popular backpack, but water-repellent coating treatment details and PFAS status unclear.
Black Diamond does not disclose PFAS or water-repellent coating chemistry for this pack. Nylon backpacks typically use water-repellent coatings that may contain PFAS; confirm with brand before purchase if concerned.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nylon/polyester with water-repellent coating finish
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 Blitz 20 uses nylon and polyester fabrics treated with a water-repellent coating (water-repellent coating) finish, the standard for outdoor packs. water-repellent coating treatments historically relied on fluorinated compounds (PFAS), though modern formulations sometimes use non-fluorinated alternatives. Black Diamond does not publicly specify which water-repellent coating chemistry is used on this model, making it impossible to assess PFAS content from published specs alone. The nylon and polyester themselves are inert under normal use; the concern centers on the surface treatment.
The brand's record and disclosure
Black Diamond is owned by Clarus Corporation and competes in the premium outdoor gear market. The brand has not issued public statements on PFAS elimination or water-repellent coating chemistry transparency for its backpacks. No major recalls related to chemical hazards in this product line are on record. Without active disclosure, consumers cannot verify whether the water-repellent coating finish uses legacy fluorinated compounds or newer alternatives.
How it compares in its category
The Blitz 20 is a mid-range 20-liter day pack positioned between budget brands and high-end ultralight packs. Competitors like Osprey, Gregory, and Patagonia have begun disclosing water-repellent coating chemistry or transitioning to PFAS-free treatments; Black Diamond's silence puts it behind industry leaders on transparency. Other brands in this tier offer similar durability without clarity advantage, making the lack of disclosure a comparative weakness rather than a unique risk.
If you buy it
Contact Black Diamond directly to ask whether this specific model's water-repellent coating finish is fluorinated or fluorine-free, and request documentation. Machine wash in cold water per care label and air dry to avoid heat stress on any coatings. Inspect seams and coating annually for degradation; reapply water-repellent coating treatment if water beading diminishes (using PFAS-free products if possible). The pack itself has no heated-use risk, but the water-repellent coating treatment decision should inform your purchase confidence.
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.”
Fluorinated water-repellent coating (PFAS in water repellent coating)
Standard water-repellent coating finishes on outdoor textiles often contain C8 or C6 PFAS compounds, but Black Diamond does not disclose the specific chemistry for this model. Fluorine-free alternatives now exist and are used by some competitors.
Azo dyes in polyester/nylon fabrics
No recalls or reports of restricted azo dyes in Black Diamond packs. Nylon and polyester are standard carrier materials; modern mills typically avoid banned azo compounds, but the brand provides no dye-safety certification.
Antimony in polyester fiber
Polyester used as catalyst carrier can retain antimony; concentrations in outdoor apparel are generally negligible and not a reported issue in this product class, and Black Diamond packs do not undergo heat treatment that would mobilize antimony.
Formaldehyde resins in fabric finishing
Wrinkle-resist or flame-retardant finishes sometimes contain formaldehyde releasers; no public reports of such treatment on Black Diamond day packs, which are not marketed as flame-resistant.
Coating degradation and microfiber shedding
Synthetic outdoor packs shed microfibers during washing and wear, particularly if the water-repellent coating degrades. The rate and composition depend on material quality and water-repellent coating durability; typical for the category but unquantified for this specific product.
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.
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.