Leather and mesh upper materials Elastic cord and lock lacing system for fast and secure fit Entire webbing made from recycled materials Mesh lining made from recycled materials Integrated EVA foam insole made from recycled materials Arch shank made from molded nylon Air Cushion in the heel for shock absorption and stability Lightweight EVA foam midsole for stability and comfort Sticky rubber outsole from Merrell for durable traction and grip Block Heel closure with Speed Laces Rubber sole material Speed Strike Leather Sieve Elastic and Lightweight