Sanita"s well-known Original collection has a custom sole designed to reduce strain on your lower back and legs, providing a subtle rocking motion that actually propels you forward as you walk so you can live comfortably every day. The Original collection also features: easy-to-clean uppers in a variety of designs, water-resistant oil leather with contrast lining, bold, colorful outsoles, polyurethane (pu) outsole reinforced with a hard plastic frame for stability and durability, anatomically shapeshaped footbed engineered for arch support with a roomy toe box rocking motion sole allows natural motion from heel to toe, encouraging healthy stride, the original outsole, approved by the apma for its standards in arch support and orthopedic constructiouction, and a full leather insock with no seams at the heel or toe for optimal comfort at all heel heights.