Waterproof oily leather upper with die cut rubber heel for durability. Mesh lining treated with M Select FRESH for odor control. M Select DRY waterproof membrane construction, seals out water and lets moisture escape, keeping your feet dry. Bellow Tongue for debris protection. Merrell air cushion in the heel absorbs shock. Molded nylon arch shank for increased stability. Removable EVA footbed provides support and breathability for all day wear. 5mm sole lug depth. Vibram® outsole for increased durability.