Asics · Waterproof Sports Gear
ASICS Men's Dry Knit Shorts
Polyester shorts with water-repellent coating; ASICS silent on PFAS.
ASICS does not disclose PFAS use in this product. water-repellent coating-treated athletic wear commonly uses fluorochemical finishes. No third-party verification available.
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Material
polyester knit 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
These shorts are polyester knit with a water-repellent coating (water-repellent coating) finish. Polyester itself is a synthetic polymer with low toxicity during normal wear. The water-repellent coating finish is the material concern: it typically requires fluorochemical treatment (PFAS-based) or newer alternatives, though ASICS has not publicly disclosed which type they use. Polyester does not shed microplastics during normal wear at meaningful levels; concern arises only with physical degradation or high-heat washing.
The brand's record and disclosure
ASICS has not published a detailed PFAS or hazardous chemical policy specific to apparel, distinguishing them from brands like Patagonia or Lululemon that have made public commitments. They do not advertise PFAS-free alternatives for water-resistant gear. ASICS holds no major exclusions or recalls related to formaldehyde, azo dyes, or heavy metals in recent apparel lines. The brand's silence on water-repellent coating chemistry is notable and warrants assumption of conventional fluorochemical treatment.
How it compares in its category
Sports shorts with water-repellent coating finishes are industry-standard; most competitors (Nike, Adidas, Patagonia) use similar polyester constructions. ASICS' shorts are mid-market positioned, without transparency that sets them apart. Brands offering explicit PFAS-free or fluorochemical-free alternatives (e.g., Patagonia's water-repellent coating Bluesign certified lines) command higher prices and stronger disclosure. This product falls into the typical category default of unconfirmed water-repellent coating chemistry.
If you buy it
Wash in cold water and tumble dry on low to preserve the water-repellent coating finish and avoid degradation that could release polymer fragments. Do not dry-clean or use high heat, which can degrade the polyester and any resin finishes. Replace when seams fray, fabric pills heavily, or water-repellent coating visibly fails (water no longer beads). Normal wear poses minimal hazard; the primary risk is environmental leaching if the water-repellent coating finish contains PFAS and is not properly sealed, which occurs during manufacturing, not consumer use.
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 chemistry (fluorochemical type unknown)
ASICS does not disclose whether the water-repellent coating finish uses legacy PFAS (perfluorooctanoic acid derivatives), newer short-chain alternatives, or non-fluorochemical methods. Polyester shorts with water-repellent coating almost universally employ fluorochemical treatment; the hazard is environmental and occupational (factory workers), not direct skin contact.
Azo dyes and formaldehyde resins in textile dyeing
No recalls or documented issues reported for ASICS apparel related to azo dyes or formaldehyde resins. However, ASICS does not independently certify dye safety (e.g., Oeko-Tex, GOTS); reliance on supplier compliance is unverified.
Antimony in polyester fiber
Antimony trioxide is used as a catalyst in polyester synthesis and may persist at trace levels in final fiber. Industry studies show levels far below dermal absorption thresholds during normal wear; no ASICS-specific testing published, but no brand-specific hazard on record.
Microplastic shedding during laundering
Polyester knit shorts can shed microfibers when washed, especially if the fabric pills or degrades. This is a wash-phase environmental hazard, not a direct toxicological one to the wearer. Cold washing and air drying minimize fiber release.
Elastic and trim materials (waistband, leg cuffs)
Elastane or rubber used in waistbands and cuffs may contain trace heavy metals or residual monomers; no documented issues for ASICS shorts. Direct skin contact is brief; risk is negligible during normal wear.
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 Sports Gear
Patagonia
Men's 10" Quandary Shorts
nylon/polyester blend with water-repellent coating treatment
Lower concern. Patagonia uses PFC-free water-repellent coating; verify MADE SAFE label on tag.
✓Lab test found no PFAS
Reebok
Men's Athlete Speed Shorts
Polyester mesh and nylon blend, standard athletic construction
Lower concern. Standard athletic shorts without water-resistant coating.
⚠Risky category by default
Patagonia
Men's Home Waters Hybrid Shorts
Polyester blend with PFAS-free water-repellent coating finish
Lower concern. Patagonia phased out PFAS-based water-repellent coating; verify current product line batch.
⚠Waterproof or stain-proof treatment
More waterproof sports 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.