The Endurance GTX Trail is a lightweight sock for trail running, light hiking and everyday wear. Wool/nylon/Isofil combination ensures maximum moisture transport, durability, warmth and moisture management Double cuff that stays in place without biting Strategically placed padding for protection and comfort Ribbed band at the ankle for added support. Content: 40% New Wool, 35% Nylon, 24% Isofil, 1% Lycra |