FULL LENGTH SIZE * Women 6-7 Men 7-8* Clinically designed doctor recommended * At the heart of every Spenco RX© product is a unique SpenCore layer Spenco s cushion layer that absorbs shock reduces friction and improves overall foot comfort * Soft durable arch support * Soothes tired feet and sore arches * Improves body alignment * Absorbs shock and reduces friction that can cause blisters * Unconditionally guaranteed for one full year