Champion · Waterproof Sports Gear
Champion Men's Nylon Warm-Up Shorts
Lower concern. Nylon base, no water-repellent coating claimed.
Champion's warm-up shorts are nylon without disclosed water-repellent or stain-resistant finishes. Nylon itself poses lower PFAS risk unless treated; no treatment mentioned here.
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Material
Nylon, no specified water-repellent treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
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
Champion's nylon warm-up shorts are constructed from polyamide (nylon) fibers, a synthetic polymer that does not contain PFAS by default. The absence of any stated water-repellent (water-repellent coating) finish is significant: it rules out the primary source of PFAS in athletic wear. Nylon itself is chemically stable and does not leach monomers into skin under normal wear conditions. The main processing concern with nylon is residual dye chemicals and any antimony catalyst used during polymerization, both present at trace levels in finished fabric.
The brand's record and disclosure
Champion, owned by Authentic Brands Group, has not published detailed material transparency or chemical restriction lists comparable to leading outdoor brands. The brand does not advertise PFAS-free certifications or third-party chemical audits for this product line. No major recalls or documented chemical safety controversies specific to Champion nylon apparel have been established in public records. This silence reflects typical legacy sportswear practice rather than evidence of hazard; the brand has faced no reported class actions or regulatory warnings tied to this product category.
How it compares in its category
Nylon warm-up shorts without water-repellent coating treatment are standard practice and represent the lower-risk end of synthetic athletic wear. Equivalent products (polyester or cotton-blend warm-ups) from brands like Nike, Adidas, or Russell also lack explicit PFAS claims unless marketed as water-resistant. Champion's positioning as a mass-market athletic brand means quality control and chemical compliance are subject to standard US textile regulations but typically not to premium-tier scrutiny. Price and durability are on par with category norms; chemical risk profile is comparable to unlabeled competitors at this tier.
If you buy it
Wash in cool water and dry on low heat or air-dry to preserve elastic and nylon integrity; high heat can degrade fibers and theoretically stress residual dyes. Do not expose to prolonged direct sunlight, which can yellow nylon and concentrate any surface dyes. Inspect after 20 to 30 washes for pilling, seam degradation, or elastic loss; these are replacement triggers in warm-up gear. No special precautions beyond standard athletic wear care are required; the product poses no acute chemical risk during normal 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.”
Azo dyes and residual dye chemicals
Nylon textiles are routinely dyed using azo and reactive dyes; while regulated azo dyes are not classified as carcinogens under current EU/US standards, residual unbound dye can migrate under friction or sweat in rare cases. Champion does not publicly specify dye chemistry or testing for color fastness; the risk is low for black or dark warm-up shorts but cannot be ruled out entirely without testi
Antimony trioxide catalyst residue
Nylon polymerization often uses antimony as a catalyst; modern production leaves trace quantities in fiber. No evidence of health risk from antimony in finished nylon textiles exists, and exposure during wear is negligible. Champion's production standards are not publicly documented, but this hazard is not established in any textile safety database for nylon apparel.
Formaldehyde resin finishes
Without a stated water-repellent or wrinkle-resistant treatment, these shorts are unlikely to contain formaldehyde-based finishing resins. Standard nylon requires no such treatment, and no industry sources or product labeling suggest Champion applies durable-press chemistry to basic warm-up shorts. If present at all, levels would be minimal and below regulated thresholds.
Microfiber shedding and fragmentation
All synthetic athletic shorts shed microfibers during washing; nylon sheds at rates comparable to polyester. This is an environmental rather than direct health hazard, but frequent laundering will generate microplastics. Washing less often or using a microfiber filter bag can reduce shedding without affecting product safety during wear.
Elastic degradation and component materials
Waistband and drawstring elastics in budget athletic wear are often made from rubber or synthetic latex blends; composition is not disclosed. Degradation over time can release trace chemicals, but this typically occurs only after 2 to 3 years of heavy use. No recalls or complaints specific to Champion shorts elastics have been documented.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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
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.