New Balance 623 - Men's Putting the fit in fitness, the New Balance 623 is a versatile training shoe that helps you work your way to optimal performance. Lightweight low-cut leather upper for durability. Injection-molded EVA midsole adds cushioning and flexibility. ABZORB® in heel and forefoot provides exceptional shock absorption. Non-marking rubber outsole is long-wearing and durable. Wt. 12.6 oz.