Machine wash or Hand wash. Great Material - Compared with other socks, our ankle socks have 80% cotton. High content of cotton makes our socks super soft and comfortable. Dry & Breathable - These moisture-wicking mens ankle socks are designed for running and exercising. Mesh in the instep and towel-fabric on sole part can make sure your feet breathe well and keep dry all the day. Comfortable & Durable - These mens socks have full cushion on toe and sole part. Add extra durability and comfort in high-wear areas, reducing frictions and blisters, preventing broken holes and extending service life. Non-slip - These athletic socks with arch support provide good elastic stretch, holding socks stay in place when you doing sports or walking, running, etc, thence saying goodbye to slippery dilemmas!