Silicone is the secret! A recent, widely published study found that high performance soft silicone cushions can relieve sore, aching heels, ankles-knees and back more effectively than custom orthotics costing hundreds of dollars. Made from a clear medical grade silicone for extra comfort, WonderZorb Cushions absorb the foot shock forces that can aggravate pain and discomfort with every step. Contouring to cradle the foot, these technologically advanced cushions feature a softer silicone dot to provide maximum pain relief where it’s needed most.