2XU Men's Race VECTR Sock 85% Nylon, 15% Lycra Imported X:lock compression Technology optimizes your foot strike and push off while racing X:blend fabric wicks sweat away and helps maintain body temperature The secure, ergonomic fit is designed to stabilize the foot, arch and ankles and prevent blisters Dry mesh panels add breathability to your keep feet cool Cushioned heel and forefoot, plus a linked toe cage add comfort