PRODUCT FEATURES: Contoured with left- and right-specific design Dense, protective foam cushioning with perforation for more breathability Low-profile shell for lightweight, strong construction SuperLock layers that spike into sock fibers, helping secure the fit ADDITIONAL DETAILS: Guard: 47% thermoplastic elastomer/40% K resin/13% ethylene vinyl acetate (EVA) Sleeve: 65% polyester/19% rubber/16% spandex CE/NOCSAE certified Recommended care: Hand wash