Gap · Waterproof Sports & Performance Undergarments
Gap Men's 5" Boxer Briefs
Lower concern; standard underwear with no known PFAS triggers.
Basic cotton-blend boxer briefs with no water-resistant or stain-resistant treatment disclosed. Gap makes no PFAS claims. No public lab testing available; minimal risk profile for untreated textile intimate wear.
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Material
Cotton blend, elastic waistband
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
Gap Men's 5" Boxer Briefs are a cotton-blend fabric, typically 86-90% cotton with polyester for durability and stretch. Cotton is a natural fiber with lower chemical burden than synthetic-only garments, but blends still require dyes and finishing treatments during manufacturing. The elastic waistband introduces synthetic rubber or elastane, which can shed microfibers under wear and washing but is not a documented leaching hazard in this product category.
The brand's record and disclosure
Gap Inc. has no published transparency report or third-party certifications (such as GOTS or Oeko-Tex) specifically for this product line. The brand does not disclose chemical use, supplier audits, or formaldehyde-resin or azo-dye testing for basic apparel. No major recalls or safety violations are on record for Gap underwear. Lack of disclosure does not indicate hazard; it reflects typical industry practice for commodity basics.
How it compares in its category
Basic cotton-blend boxer briefs occupy the middle ground of the apparel market. They carry lower chemical risk than synthetic-only performance underwear (which may contain antimicrobial finishes or flame retardants) but offer less transparency than certified organic or sustainable alternatives. Gap's price point and scale suggest standard commercial dyeing and finishing, not premium low-chemical processes, but also no unusual chemical inputs.
If you buy it
Wash new garments once before wearing to reduce loose dye and surface residues. Use warm water and avoid bleach, which can degrade elastic and synthetic fibers. Dry on low heat or hang-dry to preserve elastane integrity; high heat accelerates microfiber shedding from waistband and leg openings. Replace when elastic loses tension (typically 12-18 months of regular use) or seams fray, as breakdown accelerates chemical migration from exposed fibers.
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 colorant allergens
Cotton-blend garments at Gap's production scale typically use disperse or reactive azo dyes. No specific testing is public for this product, but some individuals experience contact dermatitis from azo residues; initial washing mitigates this risk significantly.
Formaldehyde-based finishing resins
Cotton-polyester blends may receive formaldehyde-urea or melamine resins for wrinkle resistance and shape-lock during manufacturing. Gap does not disclose use. Standard levels in basic apparel are low and volatile off-gas during storage and first wash; no documented hazard for this product.
Microfiber shedding from elastic and seams
Synthetic elastic waistbands and polyester thread shed microfibers during wear and washing. This is a known environmental concern rather than direct health hazard, but accumulation in sensitive skin areas (waist, groin) can theoretically irritate in rare cases.
Heavy metals in synthetic dyes
No documented cases of lead, cadmium, or other heavy metals in Gap basic apparel. Modern dye chemistry and import compliance reduce this risk, though Gap does not publish testing data.
Antimony in polyester fibers
Antimony trioxide is used as a catalyst in polyester production but remains bound in the polymer chain and does not leach into skin. No health hazard is documented for standard apparel polyester, including this product.
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.
More waterproof sports & performance undergarments 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.