Waterproof coated leather and mesh upper - Waterproof membrane seals out water and lets moisture escape - Waterproof medial zipper for quick on and off - Bellow tongue keeps out debris - Protective and abrasion resistant rubber heel and toe cap - Breathable mesh lining - NXT lined footbed cover to prevent odor - COMFORTBASE removable contoured footbed cradles your foot in all day comfort - Molded nylon arch shank - Merrell air cushion in heel absorbs shock and adds stability - Super rebound compound provides durable shock absorption