Full grain leather and mesh upper Elastic cord and lock lacing system for quick secure fit 100% recycled webbing 100% recycled mesh lining X% recycled integrated EVA foam insole 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 tunes each outsole with durable traction that grips when and where you need it Lug: 4mm