'+ Mesh upper for breathability and lightweight + 100% recycled laces and webbing + 100% recycled mesh lining + 100% recycled mesh lined removable EVA insole + Molded nylon arch shank + Merrell Air Cushion in the heel absorbs shock and adds stability + 10% recycled EVA foam midsole + Merrell mountain-grade Quantum Grip™ rubber outsole + Lug Depth: 4.0mm