Our most popular performance orthotic with added Plastazote top layer. Designed with a thin, flexible, low profile that automatically adjusts to the foot while offering great support through the gait cycle. Includes a two layer material of poron padding in the middle and plastazote on top. Plastazote is a premium material to help with sensitive feet. It reduces slippage within the shoe, protects the skin and forms to foot. This is an excellent choice for the diabetic foot or anyone with sensitive feet.