Neutral Arch design fits most foot types. You can trim the toe area in order for it to fit inside your shoe. It may depend on the width of your heel, if the size will fit or not. However,it is not recommended to trim the sides of the heel because it may alter the placement of the heel cup Gel pads in the heel and forefoot provide cushioning Hydrologix moisture management treatment keeps feet cool and dry. Provides energy return and increased performance