Gymshark Review, Is Gymshark Non-Toxic?
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.
Across 4 graded products, Gymshark averages Good (65/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade Good or better yet. Grades are model-based estimates, not lab results.
Graded and flagged Poor and Bad, we’d swap these
Gymshark
Women's Vital Seamless 2.0 Leggings
Nylon, elastane blend (seamless knit)
Lower concern; standard leggings without waterproofing or stain treatments.
⚠Risky category by default
Gymshark
Women's Training Leggings 2.0
Nylon/polyester blend with elastane
Lower concern for standard leggings, but no brand transparency on finishes.
⚠Risky category by default
Gymshark
Pants & Jumpsuits Gymshark Flex High Waisted Leggings
Polyester/nylon blend (standard athletic fabric)
Lower concern; standard leggings with no known PFAS triggers.
⚠Risky category by default
Gymshark
Womens Pants & Jumpsuits Gymshark Adapt Camo Seamless Leggings
Nylon/polyamide blend with elastane (spandex)
Lower concern; basic seamless legging likely safe unless water-repellent coating applied.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →