Do Under Armour sports performance undergarments have PFAS?
Under Armour sports performance undergarments average 59 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Under Armour sports performance undergarments graded as of October 2026, level with the 59 out of 100 median for the 12 other sports performance undergarments brands graded alongside it.
Under Armour sports performance undergarments average Good on our four-band scale. None of them clear our buy threshold. That is above 46% of the sports performance undergarments brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Graded and flagged Poor and Bad, we’d swap these
Under Armour
Men's 3-Pack Performance Cotton Boxerjock
- Cotton blend with elastane
- We found no PFAS statement from the brand
- Heavy metals, All colored cotton textiles use synthetic dyes; concern is lowest for neutral or light colors…
3 hazards checked on this product. See all of them.
Under Armour
Men's Under Armour Charged Cotton 6-inch Novelty Boxerjock 3-Pack
- Cotton blend (Charged Cotton proprietary fabric)
- We found no PFAS statement from the brand
- Azo dyes and synthetic colorants, Polyester-cotton blends rely on synthetic acid/reactive dyes standard in…
4 hazards checked on this product. See all of them.
Under Armour
Men's Under Armour Performance Tech Mesh-Mod 6 in 3 Pack
- polyester mesh, nylon blend
- We found no PFAS statement from the brand
- Formaldehyde / VOCs, No public disclosure from Under Armour confirms or excludes formaldehyde-based finishing…
Under Armour
Men's 3-Units Boxer Brief
- polyester/nylon blend with elastane
- We found no PFAS statement from the brand
- Formaldehyde / VOCs, Synthetic apparel sometimes receives formaldehyde-based finishing to improve shape…
4 hazards checked on this product. See all of them.
Under Armour
Men's Essential Tech Boxerjock 3-Pack
- Nylon, spandex blend, no disclosed coatings
- We found no PFAS statement from the brand
- Microfiber shedding and degradation, Synthetic nylon and spandex release microfibers during washing and wear…
Under Armour
Men's Performance Tech Mesh Boxer Briefs
- polyester/nylon mesh blend, no water-resistant treatment disclosed
- We found no PFAS statement from the brand
- Formaldehyde / VOCs, Not disclosed by Under Armour. Mesh briefs typically receive minimal finish (mostly…
2 hazards checked on this product. See all of them.
Under Armour
Men's Underwear & Socks Under Armour 3 6" Performance Boxerjock Boxer Briefs
- polyester, spandex blend, no reported treatment
- We found no PFAS statement from the brand
- Antimony in polyester, Antimony trioxide is a common polyester catalyst; trace residues may remain in…
4 hazards checked on this product. See all of them.
Under Armour
Men's Tech
- polyester blend with moisture-wicking treatment
- We found no PFAS statement from the brand
- PFAS, Moisture-wicking polyester garments commonly use fluorochemical water-repellent coating finishes unless…
2 hazards checked on this product. See all of them.
Better sports performance undergarments from other brands
Graded higher than the Under Armour average of 59.
Puma
Women's Quarter Crew Socks (6 Pairs)
- Cotton/polyester blend socks, no waterproofing
- Azo dyes
3 hazards checked on this product. See all of them.
Brooks
Brothers Men's 3-Pack Cotton Boxers
- 100% cotton
- We found no PFAS statement from the brand
- Azo dyes and residual dye chemicals
3 hazards checked on this product. See all of them.
Brooks
Brothers Men's Supima Cotton Boxer Briefs
- Supima cotton, no surface treatment disclosed
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
4 hazards checked on this product. See all of them.
The same question, asked of the other sports performance undergarments brands
Best average grade first. Under Armour averages 59.
See every Under Armour product we grade on the Under Armour brand page, or the full sports performance undergarments ranking.