Features suede leather-and-mesh upper traditional lace closure bellows tongue keeps debris out breathable mesh lining protective rubber toe cap Merrell Air Cushion in the heel absorbs shock and adds stability Kinetic Fit Base removable contoured insole for flexible support EVA foam midsole for stability and comfort molded nylon arch Shank M Select GRIP tunes each outsole with durable traction that grips when and where you need it 5mm lug depth