Full grain leather suede and mesh upper - Breathable mesh lining - Metal hooks and webbing loops for secure lacing - Bellows tongue keeps debris out - Protective rubber toe cap - Molded external heel counter and heel stability arm - Merrell Kinetic Fit Base removable contoured insole for flexible support - Merrell Air Cushion Viz in the heel absorbs shock cradles the heel and adds stability - Vibram MegaGrip - Flex Index Grade 4 - 5mm lug depth