RSG 2-Pack Anti-Skid Gripper Slipper Socks for Men & Women One Size Fits Most. Women's Shoe Size 4-9.5, Men's Shoe Size 5.5-8. Depending on your shoe size they will fit longer or shorter toward the ankle. This will also determine the grip coverage on the bottom of the foot. Skid resistant sole 80% Acrylic - 20% Nylon Tube style, no formed heel.