Endurasok V12 VSOK4 Work Socks. Invisible no rub toe seam. Forward flex feature for instep comfort. Using luxury yarns & the latest technical know-how, These V12 work socks offer day long comfort. The calf band is soft but resists the usual tendancy to creep down the leg on wearing. Tough reinforced heel & toe. MATERIAL 83% Cotton 5% Polyester 8% Polyamide 4% Elastodiene SIZE RANGE M = SHOE SIZE 3-6 L = SHOE SIZE 7-10 XL = SHOE SIZE 11-13