Unused Agaruuno Anti-Fall Socks 24-25cm (Developed by Hiroshima University) Easy to walk! Prevents tripping! Corrects posture! Prevents falls! The material is 90% cotton yarn. Cotton is gentle on the skin, and the soles of the feet have excellent anti-slip effects, as well as moisturizing effects that prevent dry, cracked heels. The ribbed structure is breathable, preventing stuffiness and keeping feet warm. Unused, but stored at home, so please refrain from purchasing if you are sensitive to this. Material: Cotton, Nylon, Polyurethane Gray Color...Black