Keds Women's Sneaker Liner Sock with Silicone Heel Grip 2-Pack Natural 1st Sock: 58% Cotton, 28% Polyester, 8% Nylon, 4% Rubber, 2% Spandex; 2nd Sock: 62% Cotton, 27% Polyester, 5% Nylon, 3% Rubber, 3% Spandex Imported Machine Wash Low show hidden silhouette Silicone heel grip