Spenco 3/4 Orthotic Arch Supports are specifically designed to help control the position of the feet. They are shaped to help stabilize and balance the foot and to provide the extra comfort and support needed for optimum performance. This unique cushioning system helps absorb shock, reduce friction and improve overall foot comfort. Lightweight, durable and washable. This item can be heat-molded - after heating in hot water, the Orthotics can be shaped to the foot for long-lasting support, comfort and stability. See product for details and instruction.