Dual Density Orthotics - Red Dot Maximum support and shock absorption using two densities of medical grade silicone - clear silicone with a softer density red silicone dot, provides additional relief to the sensitive area. Note: Foot products are not returnable once removed from sealed packaging. Wonder-Cup Relief of bursitis Achilles tendonitis. Sizing: Medium fits Men's 5-7, Women's 6-9