The GTX Trekker is a mid-weight sock for trail running, hiking and backpacking. Isofil (ensures maximum moisture transport) New Wool (for durability, warmth and moisture management) Double cuff that stays in place without biting Strategically placed padding for protection and comfort Forward Flex Technology (allows the sock to flex with the direction of the foot, eliminating movement which can lead to blisters and discomfort) Content: 40% New Wool, 36% Nylon, 23% Isofil, 1% Lycra Note: XL size is only available in Green and Grey. |