For Over Pronation or Over Supination, Just Flip Them Over. 4 degree corrrection. Medical Grade Silicone. Will Last For Years. 2 1/2 inch wide Treat: Pronation, Supination, Flat Feet, Plantar Fasciitis, Weak Ankles, Knee Pain As Dispensed from Medical Offices Pair of Heel Wedges, Medium 2 1/2 inch wide