Model [ M520RN3]Men's New Balance 520v3 - Navy - Men's Running ShoesDesigned to be versatile, the 520v3 features data-inspired elements to help you power forward during even your toughest runs. Featuring an IMEVA midsole for comfort, a rubber outsole for durability and a plush synthetic/mesh upper, the men's running shoe is where style meets comfort. The men's 520v3 features a no-sew material application and a NB Response 1.0 Performance Insert for a sleek fit that feels good. Weight: 226 grams (7.9 oz) 4 mm drop: due to variances created during the development and manufacturing processes, all references to 4 mm drop are approximate Injection molded EVA (Ethyl Vinyl Acetate) Rubber outsole No-sew material application Synthetic/mesh upper