The Aetrex Orthotic System is Built-In to every pair; Arch support helps to stabilize and align feet,Arch support helps to stabilize and align feet,The memory foam foot-bed provides cushioning & comfort Adjustability: Side Zipper and adjustable buckle Laces, Upper Material: Genuine Leather, Padded heel for extra comfort, Midsole Material: Lightweight EVA foam for comfort, Upper Material: Genuine leather and nubuck, Midsole Material: Lightweight EVA, Outsole Material: Lightweight Rubber, Removable Insole: Yes, Heel Height: 1 5/16""