Supreme blister resistance with friction free Profilen in the heel and toe. Supreme anti microbial/anti odour properties with dri release wool with freshguard. Supreme cushioned anatomical design left and right socks. Supreme duarbility with under toe seamless construction and nylon splicing in toe and heel areas. Supreme comfort with arch grip section Y heel and lycra. 44% Nylon, 28% Dri release wool (88% polyester and 12% wool) 24% Profilen and 4% Lycra.