Brooks · Waterproof Sports Undergarments
Brooks Men's Atmosphere Short Sleeve
Lower concern athletic tee. No water-repellent coating treatment disclosed.
Standard polyester athletic short sleeve with no water-repellent coating treatment disclosed by Brooks. Polyester base carries lower PFAS risk without water or stain-resistant claims.
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Material
Polyester athletic knit, no specified water-repellent coating treatment
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Azo dyes and colorant toxicity
Black or dark polyester knits typically use azo dyes, which are regulated but not banned in most jurisdictions; certain azo compounds can release carcinogenic amines under reductive conditions (sweat + heat + bacteria). Brooks does not publish dye-safety specifications for this product, so risk cannot be ruled out, though major athletic brands typically comply with ISO 14362 restrictions.
Formaldehyde / VOCs
Polyester knits may receive formaldehyde-containing finishes for wrinkle resistance or color-setting, though concentrations in athletic wear are usually far below skin-sensitization thresholds. No treatment is disclosed for this model, but pre-wash will volatilize most residual formaldehyde.
Source, ATSDR ↗Heavy metals
Synthetic dyes may contain trace heavy metals (lead, cadmium, chromium); regulatory limits in the EU and most developed markets restrict these, but oversight varies. Brooks does not certify this item to Oeko-Tex or similar third-party dye-safety standards, leaving compliance status opaque.
Source, FDA ↗Microplastic shedding during use and wash
Polyester athletic wear sheds microfibers in the washing machine and during wear; while not a direct skin hazard, accumulated environmental release is a documented concern for synthetic textiles. This is inherent to polyester and not specific to Brooks, but relevant to the material choice.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Antimony in polyester fiber
Antimony is used as a catalyst in polyester synthesis; it remains largely bound in the polymer and does not migrate into sweat under normal conditions. No elevated antimony concerns are documented for athletic polyester apparel from major manufacturers including Brooks.
The full breakdown
What it's made of and why it matters
This is 100% polyester athletic knit, a petroleum-derived synthetic fiber commonly used in performance wear. Polyester itself is chemically stable in normal use and does not leach problematic compounds like BPA. The hazard profile for polyester depends entirely on dyes, finishing treatments, and residual manufacturing chemicals, not the base fiber. Brooks states no water-repellent coating (water-repellent coating) treatment on this model, which eliminates the primary vector for PFAS in athletic wear and is a positive signal for chemical minimalism.
The brand's record and disclosure
Brooks (a subsidiary of Berkshire Hathaway/Dial) has not published explicit commitments to PFAS-free apparel or detailed chemical disclosure policies comparable to outdoor brands like Patagonia. However, Brooks has no known recalls or public safety controversies tied to apparel chemical hazards in its heritage as a footwear and athletic-wear maker. The brand's silence on PFAS is notable given industry momentum, but absence of reported problems suggests their manufacturing baseline is not egregiously non-compliant.
How it compares in its category
This short-sleeve tee occupies the mainstream athletic-wear middle ground, no premium chemical certification (like Oeko-Tex Standard 100), but also no budget-tier risk markers. Competing polyester tees from Nike, Adidas, and Under Armour are chemically comparable; Brooks' explicit omission of water-repellent coating treatment here presents lower concern than many water-resistant variants, which often contain PFAS. This product avoids the coating-layer complexity that amplifies chemical exposure in performance jackets or leggings.
If you buy it
Wash before first wear to remove manufacturing residues and any loose dye or finish chemicals; use warm water and standard detergent. Polyester athletic wear is heat-stable to normal dryer temperatures (medium heat presents no hazard of this kind on record; high heat degrades elastic waistbands if present, not a toxicity concern). No special care is needed beyond standard machine washing; the lack of coating means no risk of degradation releasing particles. Replace when elastic fails or fabric pills, not due to chemical safety.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Brooks has made none
Formulations change between production runs, so check the current label. How we grade.
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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.