86% Extra-Fine Merino Wool, 10% Polyester,3% Nylon,1% Spandex Size: US 9-11/Shoe Size 4-10? Made of high quality wool material, to keep your feet at optimal level warmth. Designed for extreme weather conditions, great cold weather gear for outdoor activities and sports like skiing. Terry-loop cushioning throughout the entire foot, making the socks suitable for hiking, mountaineering, outdoor camping, cycling and longtime outdoor work. Package contains 10 pairs of multicolored socks. Perfect for work, formal, and casual occasions.