The Men's MX623 cross-trainer is one of New Balance's most popular styles. Excellent shock absorption makes this style a perfect choice for most activities. ABZORB® cushioning in both heel and forefoot for exceptional shock absorption. Premium leather upper for natural comfort, durability, and breathability.IMEVA (injection-molded EVA foam) midsole for firm yet flexible cushioning. Stability Shank embedded into midsole supports the arch and helps create a smoother gait. Non-Marking Rubber Outsole won't mark floors. Comfort collar features anatomically positioned foam pads that lock-in the heel and cushion around the ankle. Medicare / HCPCS code = A5500 Diabetic shoe. Seamless Phantom Liner reduces the weight of the shoe plus enhances the comfort and fit. Solid Sticky Rubber Outsole is constructed of durable, tacky rubber for traction on slick surfaces