MATERIAL – 50% Cotton, 45% nylon, 5% Lycra spandex. SIZE: L (Men< 11 US Size). If you want 5 pairs Men's Full Thickness Cushion Crew Hiking Socks, click https://www.amazon.com/dp/B07YFF5SL4 DURABLE HIKING SOCKS - Full thickness and cushion along the bottom of the foot can gently support and protect your Arch, Ankle, Heels and Stay up, Compressed Top Holds the sock securely on the calf, as well as keep your feet warm and dry during trekking. WELL PERFORMANCE - Ideal for hiking, trekking, walking, rock climbing, camping, mountaineering and other outdoor sports. COMFORTABLE TO WEAR - Fine gauge knitting provides compression, arch support and reinforced heel and toe to ensure maximum comfort and protection. 100% COMPLETE SATISFACTION- Please don't hesitate to contact us via Amazon message system for a instant help if at any time you aren't completely happy with your purchased.Buy with confidence.