Full grain leather upper Waterproof membrane Padded tongue & collar Without safety toe SR MaxTrax outsole for incredible slip resistance The SR Max Kobuk is a slip resistant work boot with a waterproof, oiled, tumbled leather upper. It is equipped with a waterproof bootie construction and a molded phylon midsole! The padded tongue and collar add extra comfort, and solid construction means you do not have to worry about moisture in your boots. This lace-up boot offers the slip resistance you can count on to keep you upright and working. Your work footwear be as dependable as you are!