The Storm Bloc Socks are made with BlueGuard Long Cotton that has been engineered from high strength anti-abrasion durability yarn to create the best wear and abrasion resistance rating possible, while maintaining all the comfort and protection features you expect from an outdoor sock.Made with protective, shock-absorbing terry cushioning panels - to minimise fatigueWoven arch supportsExtended heel Reinforced toe seamScientifically tested over 30x more durable than a standard branded walking sock.Fabric: 57% Cotton 34% Polyamide 8% Polypropylene 1% Lycra Elastane