Brooks Women's Drive Interlace Run Bra

water-repellent coating finish (likely fluorinated compounds, PFAS class)

Sports bras with water-repellent finishes typically use fluorinated water-repellent coating coatings during manufacturing. Brooks does not disclose the formulation, so presence of legacy PFAS or newer alternatives cannot be confirmed from public information. Wear and washing do not typically release significant quantities, but the material itself contains these compounds at manufacture.

Formaldehyde resins in dyes and finishes

Polyester and nylon in colored athletic wear may be treated with formaldehyde-releasing resins for dye fixation or shape retention. No public recall or testing specific to this product exists, but this is a known hazard in synthetic apparel; risk is low under normal wear and washing.

Azo dyes

Synthetic textiles often use azo dyes, some of which can break down into aromatic amines under certain conditions (acidic sweat, extended storage). No specific testing for this bra is available; industry compliance with OEKO-TEX or similar standards would exclude known carcinogenic azo dyes, but Brooks does not certify to these standards.

Elastane (spandex) degradation and microfiber shedding

Elastane fibers break down with repeated washing, heat exposure, and physical wear, releasing microfibers into wash water and potentially inhaled during handling. This is documented in technical textile literature; it affects all elastane-containing garments, including this bra. Regular machine washing and air-drying limit but do not eliminate this hazard.

Antimony in polyester

Antimony trioxide is sometimes used as a catalyst in polyester manufacturing. No specific data or concerns for this product exist in public record; it is typically retained in the polymer matrix and does not migrate during normal wear, but is a theoretical concern with older polyester formulations.