Waterproof nubuck and mesh upper; Elastic cord and lock lacing system for quick secure fit; Neoprene stretch collar for easy on and off; Breathable mesh lining; COMFORTBASE contoured insole cradles your foot in all day comfort; Molded nylon arch shank; Merrell Air Cushion in the heel absorbs shock and adds stability; Lightweight EVA foam midsole for stability and comfort; Vibram XS Trek Evo