Those terry socks are using the cotton blend thread, make a steady piece with natural cotton feel. Easy to wear for the whole seasons. Fully terry on the bottom part of the socks, feels like walking on the cloud, stretchy leg opening can hold your ankles with the right tension. Great piece for exercise. FABRIC DETAIL: - 83%cotton,11%polyester, 6%spandex SIZE: - M/L MANUFACTURER: - made in Jiangsu China WASH AND CARE FOR COTTON: - Cotton can be machine or handwashed. To prevent garments from shrinking and to keep them looking their best, wash at 30°. - Place delicate items in a mesh bag to help prevent snagging or twisting during machine cycles.