Not your great-aunt's walking shoe. The New Balance 1765 premium fitness walker unites style and support with a mesh/synthetic upper and FantomFit technology. 12 mm drop: due to variances created during the development and manufacturing processes, all references to 12 mm drop are approximate. Innovative REVlite midsole provides premium responsiveness and durability at a 30% lighter weight than other foams with comparable performance. Medial Post consists of higher-density compression-molded EVA, located on inside edge of shoe, to help prevent over-pronation. Material: Synthetic, Mesh.