New Balance Men's MX997 Training Cross-Training Shoe 100% Synthetic and mesh Synthetic sole Ndurance rubber compound for maximum outsole durability Synthetic/Mesh Upper provides lightweight comfort and support Innovative REVlite midsole provides premium responsiveness and durability at a 30% lighter weight than from other foams with comparable performance. Non-Marking Rubber Outsole won't mark floors Men's sizes: D Standard, 2E Wide weight: 10 oz.