Origin 8 Cycling Socks Argyle LG Black/Red 50% cotton 50% Coolmax/ 50% Cotton + 2070 Lycra Multi-thickness material design Increased sole base thickness for comfort Form fitting shape for reduced friction Reduced arch thickness for breathability SM (Men 4-7) (Women 5.5-8) LG (Men 10.5-13) (Women 11.5+)