Aviator Mens Five Fingers Lace-up Outdoor Walking Shoes EVA Rubber sole rubber Insole - for added cushioning, protection and confortable Durable Nylon and Breathable Mesh Upper made your feet cool and comfortable without debris Lace up Closure - offers a secure and comfortable fit Peformance Rubber Outsole offers superb grip and traction. To stimulate the muscles in your feet and lower legs