Columbia Montrail Men's Enduro-Sole LP Trail Runner 100% PRFRM thermo-moldable foam Imported Synthetic sole Weight: 1.5 oz / 43 g. Ride Height: 5 mm Synthetic abrasion-resistant top sheet wicks away moisture PRFRM thermo-moldable foam molds to the unique bone structure and shape of each foot, offering more surface area contact and dispersing pressure points High-rebound heel pad accentuates your heel's natural shock-absorbing ability Molded base flexes with your foot's natural range of motion while providing outstanding medial arch support