78%Combed Cotton,19%Nylon,3%Spandex Imported Elastic closure COMFORT SUPPORT – More softness and comfort with thickened terry, which can reduce foot friction and relieve foot fatigue during hiking & running or any other outdoor activities. GREAT ELASTICITY – Elastic rubber bands are used in the welt and foot arch to make sure the socks stay up-compressed in shape and fit snugly, comfortably attached to your calf without any sense of restraint. UNIQUE DESIGN – Y-TYPE ribbed arch structure with reinforced cushion padding in heel and toe can provide perfect foot comfort and enhanced durability in high-wear areas. BREATHABLE – Mesh design of socks creates airflow within the fabrics, which keeps your skin breathable and your feet cool and dry even under the toughest conditions. GREAT FOR OUTDOOR – Hiking & Running Socks for your running shoes, tennis shoes, or other sports shoes! Ideal for trekking, walking, running, camping, mountaineering, climbing, skiing, snowboarding, backpacking, traveling, various athletic pursuits or daily wear.