Under Armour · Waterproof Sports Bags
Under Armour Hustle 6.0 Pro Backpack
water-repellent coating backpack with undisclosed water treatment; PFAS risk unclear.
Under Armour does not disclose PFAS in this backpack's water-resistant coating. Most backpack water-repellent coating treatments contain PFAS; no public testing available for this model.
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Material
Nylon/polyester blend with water-repellent coating water-resistant 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 Hustle 6.0 Pro uses a nylon and polyester blend, both petroleum-derived synthetics with good durability and chemical stability under normal use. The water-repellent coating (water-repellent coating) finish applied to the fabric is the primary concern: these treatments historically used PFOA/PFOS or similar fluorinated compounds, though many brands have shifted to non-fluorinated alternatives without always disclosing which. Under Armour has not publicly stated which water-repellent coating chemistry is used on this model, making the PFAS exposure risk difficult to assess.
The brand's record and disclosure
Under Armour has not published a comprehensive PFAS policy or supplier transparency statement for its backpack line as of available records. The company is silent on water-resistant treatment chemistry across most products, which contrasts with competitors (e.g., Patagonia, Arc'teryx) that explicitly disclose fluorine-free or specific water-repellent coating formulations. This silence is not evidence of PFAS use, but it reflects weaker accountability compared to category leaders on chemical disclosure.
How it compares in its category
Most tactical and sports backpacks in this price range use water-repellent coating finishes with undisclosed chemistry; the Hustle 6.0 Pro is typical rather than exceptional in this regard. Brands offering certified fluorine-free water-repellent coating (such as Patagonia Refugio or Arc'teryx Khard) command transparency premiums but are less common at mainstream price points. Under Armour's lack of disclosure places it in a middle group: not best-in-class for chemical openness, but not uniquely problematic.
If you buy it
Wash the backpack in cool water with mild detergent every 6-12 months of heavy use to remove accumulated dirt and microfiber shedding, and air-dry only (heat damages synthetic fibers). Avoid prolonged direct heat, sunlight exposure, and solvent-based cleaners, which can degrade the water-repellent coating finish and increase potential leaching. Replace the backpack when seams fail or material becomes fragile, typically after 3-5 years of regular use, depending on load and weather exposure. If PFAS minimization is a priority, contact Under Armour directly to request water-repellent coating chemistry disclosure before purchase.
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 water-resistant finish
water-repellent coating treatment applied to nylon/polyester fabrics historically uses fluorinated compounds; Under Armour does not publicly confirm which chemistry is used on the Hustle 6.0 Pro, so PFAS presence cannot be ruled out or confirmed from available information.
Antimony in polyester fiber
Polyester fabrics may contain antimony as a catalyst residue from manufacturing. No specific recalls or contamination reports exist for Under Armour backpacks, and levels in finished textiles are typically minimal, but this is a known class hazard for polyester-blend apparel.
Formaldehyde resins in fabric treatment
Nylon and polyester backpacks may use formaldehyde-based finishing agents for wrinkle resistance or crease retention. Under Armour does not disclose finish chemistry; no recalls or complaints have been documented for this model, suggesting standard industry formulation with low residual risk.
Azo dyes and color fastness
Colored nylon and polyester textiles can use azo dyes (some banned for health concerns). Under Armour as a major brand typically meets REACH and similar standards; no specific violations or complaints are on record for the Hustle 6.0 Pro line.
Microfiber shedding during washing and use
Synthetic nylon/polyester fabrics shed microfibers into wash water and the environment. This is not a safety hazard to the wearer but represents environmental leakage; frequent machine washing accelerates shedding, making gentle care and less frequent laundering practical mitigation.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 42% 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 Sports Bags
Garmin
Carrying Case
Neoprene or polyester case, material unspecified
Unknown material raises concern; no PFAS disclosure from Garmin.
⚠Risky category by default
Patagonia
Guidewater Sling
recycled polyester with water-repellent coating finish
Lower concern; brand committed to PFAS-free water-repellent coating, but verify current batch
⚠Waterproof or stain-proof treatment
More waterproof sports 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.