Gore Bike Wear Men's Alp-X Pack Socks 40% POLYAMIDE (TACTEL),25% POLYPROPYLENE,15% POLYAMIDE,10% ELASTAN (LYCRA),5% POLYAMIDE (CORDURA),5% Metallized Silver fibre (X-Static), Imported Comfortable and dry: Great moisture management and sturdiness even on longer mountain bike outings. Higher cuff provides extra protection. Anti-stress cuff in Lycra Medium density mesh in Coolmax - high breathability, protection and constant venting Achille's tendon back protection Anti-shock heel protection Anti-bacterial protection provided by the X-Static pure silver fibre Anti-stress cuff in LYCRA Medium density mesh in Coolmax - high breathability, protection, and constant venting Achilles tendon back protection Anti-bacterial protection provided by the X-Static pure silver fibre