Is Bombas PFAS-free?
Across 16 graded products, Bombas averages F (62/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade C or better yet. Grades are model-based estimates, not lab results.
Graded and flagged D and F, we’d swap these
Bombas
Women's Bombas All-Purpose Performance Ankle Sock
Cotton-blend yarn, no reported water-repellent or stain-resistant treatment
Lower PFAS concern, untreated cotton-blend sock with no water-repellent coating or stain finishes reported.
⚠Risky category by default
Bombas
Women's All-Purpose Cotton Blend Ankle Socks
Cotton blend (majority cotton, synthetic blend unspecified)
Lower concern; basic cotton-blend socks with no known water-repellent coating or stain treatments, but Bombas doesn't disclose full fiber content.
⚠Risky category by default
Bombas
Men's Bombas Lightweight Athletic Ankle Sock 3-Pack
Cotton blend (primary fibers, no reported specialty coatings)
Lower-concern everyday socks; no known PFAS triggers, but brand offers no transparency.
⚠Risky category by default
Bombas
Men's Bombas Running Calf Socks
Merino wool blend (primary); elastic/synthetic blend (cuff)
Lower PFAS concern for the sock itself; limited transparency on elastic components.
⚠Risky category by default
Bombas
Women's Bombas Running Quarter Sock 3-Pack
Polyester/nylon blend sock with no known fluorochemical treatment
Lower-concern basic performance sock; no PFAS triggers identified, but no public disclosure either.
⚠Risky category by default
Bombas
Men's Half Calf Cotton Blend Socks
Cotton blend (primary); elastic, dyes, potential finishing treatments
Lower-concern baseline; untreated cotton blend socks unlikely to contain intentional PFAS, but Bombas discloses nothing.
⚠Risky category by default
Bombas
Women's Bombas UltraLite Sport Lightweight Ankle Socks
Nylon, polyester, elastane blend
Lower-concern everyday socks with no known PFAS triggers, but no explicit brand commitment.
⚠Risky category by default
Bombas
Men's Bombas All Sport Ankle Sock 4-Pack
Cotton-blend (cotton, polyester, nylon, elastane)
Lower concern, basic athletic sock with no known PFAS-prone features; Bombas has not published PFAS statements.
⚠Risky category by default
Bombas
Men's Colorblock Stripe Hiking Socks
Cotton-nylon blend; no water-repellent coating disclosed
Lower PFAS concern; basic hiking socks with no disclosed water-repellent coating treatment.
⚠Risky category by default
Bombas
Women's Hiking Performance Calf Socks
Merino wool blend with nylon/synthetic fibers, no water-repellent finish disclosed
Lower-concern choice, natural-fiber socks without disclosed water-repellent coating treatment, but brand transparency on PFAS is absent.
⚠Risky category by default
Bombas
Men's Cotton Blend Quarter Socks
Cotton blend (primary fibers, no water-repellent coating finish reported)
Lower PFAS concern for a basic cotton-blend sock without water-repellent treatment.
⚠Risky category by default
Bombas
Women's Bombas Merino Wool Blend Hiking Performance Calf Sock
merino wool blend (no water repellent coating disclosed)
Lower concern; plain merino blend with no disclosed treatments, but Bombas has not publicly committed to PFAS-free standards.
⚠Risky category by default
Bombas
Men's Bombas Hiking Performance Merino Wool Blend Calf Socks
Merino wool blend (primary natural fiber)
Lower concern, wool-dominant socks typically avoid water-repellent coating treatments; no public PFAS flags.
⚠Risky category by default
Bombas
Women's Cotton Blend Quarter Socks
cotton blend (cotton primary, synthetic blend unspecified)
Lower concern; no known PFAS triggers, but blend composition opaque.
⚠Risky category by default
Bombas
Women's Hiking Performance Calf Socks - Botanic Purple - Medium - Cotton Blend - Bombas
Cotton blend (primary material, no water-repellent coating or specialty coating disclosed)
Lower PFAS concern, basic cotton-blend socks with no chemical treatment disclosed, but brand makes no affirmative PFAS statement.
⚠Risky category by default
Bombas
Women's Hiking Performance Quarter Socks (3-Pack)
Merino wool blend with synthetic performance fibers; water-repellent coating water-resistant finish
Lower-concern choice, but water-repellent coating source unclear, ask Bombas directly if seeking PFAS-free assurance.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →