- Size: S • Universal design: ideal for correcting leg length discrepancies, relieving plantar fasciitis, Achilles tendon injuries, or for increasing height. • High-quality materials: vegetable-tanned natural leather covers that absorb sweat, and Korfant wedge, a durable orthopedic material similar to cork. • Non-slip adhesive: the bottom layer has adhesive to ensure the wedge does not slide inside the shoe. • Availability in various sizes: heights from 5 mm to 30 mm and widths S / M / L. Includes a pair (left and right). • Supplied to the NHS: used in NHS hospitals in the UK, with a proven track record of quality and effectiveness. • Made in Europe: produced by a family-owned company with decades of experience in orthopedic insoles.