Waterproof membrane seals out water and lets moisture escape + Synthetic leather and mesh upper + Traditional lace closure + External rear sling locks in the heel + Breathable mesh lining + Removable EVA foam insole + Merrell Air Cushion in the heel absorbs shock and adds stability + Molded nylon arch shank + Lightweight EVA foam midsole for stability and comfort + Merrell sticky rubber outsole with durable traction that grips when and where you need it + Stack Height (heel/toe): 23-15mm; Drop: 8.0mm; Lug Depth: 3.5mm