Waterproof membrane seals out water and lets moisture escape + Waterproof suede and mesh upper + 100% recycled laces and webbing Bellows tongue keeps out debris + Protective rubber toe cap for durability and protection + 100% recycled mesh lining + Removable EVA insole + EVA foam insole with 100% recycled top sheet + Molded nylon arch shank + Merrell Air Cushion in the heel absorbs shock and adds stability + Lightweight EVA foam midsole for stability and comfort + Merrell sticky rubber outsole with durable traction that grips when and where you need it + Lug Depth: 4.2mm