The Lightning II features the Plus Fitting System® with two removable footbeds for added and double depth. It has a firm heel counter,rocker bottom,and a soft,foam-padded tongue and collar.This shoe has a removable,polyurethane,drilex&3174; lined insole,breathable mesh and soft fabric lining,durable rubber outsole and EVA midsole,and a wide,synthetic fiber shank external TPU shank.Accommodates prescribed orthotics.Additional InfoRemovable Footbed