Orthofeet Men's and Women's Slipper Crew Socks 1% spandex Seamless toe prevents irritation and helps keep feet comfortable; Cushiony, terry-lined sole adds shock absorption Contoured heel and toe pockets prevent slipping and bunching; Cushioned top stays in place without binding Antibacterial and anti-odor materials help eliminate bacteria and odor and are great for those with sensitive skin Helps relieve Circulation, Diabetic Feet, Edema, Sensitive Feet, Swollen Ankles, Swollen Feet and Legs, Wide Calves 75% acrylic, 23% nylon, 1% polyester, 1% spandex; machine-washable