The latest upgrade to�New Balance�s 857 trainer is Version 3, maintaining the shoe�s maximum stability design with Rollbar��technology to control pronation, an external heel counter, and full EVA Strobel board. Leather upper. Removable PU insert. The black version has a non-marking, slip-resistant sole suitable for service wear. MX-001 last. Men�s sizes 6��13, 14, 15, 16, 17, 18 in 4E and 6E.