The Gel-Foam Heel Cushion is specifically designed to relieve pressure. It has a water-based gel insert that can be warmed or cooled to reduce skin damage, swelling or skin damaging perspiration. It comes with a soft-brushed polyester fabric that prevents friction on the skin, which reduces the effect of skin shearing. It is made out of material that is 100 percent durable and can be easily hand washed or tossed into your washing machine. The secure Velcro straps keep your foot in a position, are comfortable and help keep your foot still during the healing process.