Dyeenam, the world's strongest fiber is a low weight and abrasion resistant fiber which provides excellent protection against cuts, without any compromise on superior comfort Copper is well known for its anti-odor, hygienic protection and skin wellness for the wearer These 2 yarns are strategically placed to maximize hockey player safety 52% Dyeema / 25% Polyester-Copper / 20% Polyester / 3% Spandex Reebok 20K Protective Skate Sock, X-Large, Black MS1201976 MS1201976 884899934970