Gore Running Wear Men's X-Run Ultra Short Socks- Pack of 3 28% Polyamide, 26% Wool, 26% Acrylic, 16% Elastan (Lycra), 4% Polyamide (Tactel) Imported Endurance socks. Perfectly optimized low-cut socks for ultra trail runners. Maximum protection in tough shoes for ankle and Achilles' tendon. Anti-stress cuff in Lycra Whole elastic structure in Tactel + Lycra light mesh for maximum foot comfort and perfect fit Super-flat zero-friction seam double-looped inside and outside Light, anatomical multi-contact padding support Left and right anatomical structure with padding Anti-stress cuff in LYCRA. Perfect fit without compression Whole elastic structure in Tactel + LYCRA light mesh for maximum foot comfort and perfect fit Super-flat zero-friction seam double-looped inside and outside Perfectly optimized low-cut socks for ultra trail runners