Chaco Women's Outcross Evo 4 Shoe 100% Mesh Upper/Jacquard Webbing Imported Rubber sole Mesh, jacquard webbing with traditional lace system Protective synthetic top cap and heel Barefoot construction with instant-comfort ethylene vinyl acetate layer Durable luvseat polyurethane footbed with barefoot construction with an ethylene vinyl acetate layer and nylon support shank for instant-comfort Non-marking Eco tread outsole with 25 percent recycled rubber compound with sipped center lugs for wet surface grip and 3 millimeter lugs for trail traction