80% Cotton + 15% Nylon + 5% Polyster Dri-fit Basketball Socks: Athletic crew socks featuring moisture-wicking/moisture-management fibers and air-circulating ventilation channels and keep your feet dry and comfortable. Fit US Shoes Size,Men’s 6.5-11 and Women’s 8-12 Multifunctional Sports Socks: The best for hiking, cycling, camping, running, jogging, mountain biking, travelling, lacrosse, tennis, golf and other outdoor activities. Protective Socks: It’s soft and thick, cushioned footbed,Reinforced heel and toe.Feel really comfortable when doing any action and provide the best protection. Dynamic Arch Design: Arch compression support and stability to reduce foot fatigue, keeps sock in place and provide extra protection against blister. Customer Service: We provide 45 days Free exchange and 180 days warranty. So if you have any issue about our product or service, do not hasitate to let me know, then we can arrange replacement or refund without any qustion.