Leather and mesh materials for the upper section Laces and webbing made from recycled materials Tongue to keep out debris, with a protective toe cap Lining made from recycled mesh, with a contoured insole that can be removed and advanced heel cushioning for medium support A shank made of molded nylon and a midsole made of lightweight EVA foam for stability and comfort The use of Vibram TC5+ rubber for the sole shows Merrell's focus on merging performance, styling, and comfort to empower all people to confidently explore the outdoors The Merrell Air Cushion in the heel absorbs shock and adds stability