MATERIALS - Nubuck leather and mesh upper, breathable mesh lining ALL DAY COMFORT - COMFORTBASE contoured insole cradles your foot in all day comfort DURABLE TRACTION - Merrell sticky rubber outsole tunes each outsole with durable traction when and where you need it OUTSOLE - Heat resistant outsole protection for brief periods of contact that meet or exceed 500 F DETAILS - Bellows tongue keeps out debris, protective and abrasion resistant rubber heel and toe cap