RSG Men's & Women's Anti-Slip Grip Slipper Multi Pack (Assorted Colors) IMPORTANT PLEASE READ: One Size Fits: Women's Shoe Size 5-10, Men's Shoe Size 5.5 - 8.5. Depending on your shoe size they will fit longer or shorter toward the ankle. Please do not assume they will be calf length. It depends on your shoe size. Those at the top of the range will find they fit more like ankle socks. Keep your feet warm and Toasty, Soft and Comfy. They get softer with each wash. Machine washable. 80% Acrylic - 20% Nylon Skid Resistant, Traction sole slipper