Full grain leather upper; Breathable mesh lining; Comfortbase contoured design footbed with breathable foam cradles your foot in all day comfort; Comfortbase rubberized EVA midsole for increased shock absorption and cushion; Merrell air cushion in the heel absorbs shock and adds stability; Molded nylon arch shank for midfoot support and flexibility; Oil and slip resistant rubber outsole; Mark II tested; Merrell M Select GRIP rubber tunes each outsole with durable traction that grips when and where you need it; Heat resistant outsole provides foot protection for brief periods of direct contact that meet or exceed 500 degF; 3mm lug depth / Weight: 1lb 14oz