Dunham Lexington by Rockport - Free Shipping. Comfort and support don't get any better than with the Dunham Lexington oxford. Medicare approved- this men's walking shoe is packed from top to bottom with performance features. The water-resistant leather upper is backed up by a seam-sealed- waterproof membrane to keep you dry in wet conditions. The high-density- memory foam-cushioned insole can be replaced with a personal orthotic for greater customization; ABZORB pods in the heel and forefoot add to the cushioning effect. Between the Rollbar- which delivers enhanced rearfoot stability- and the slip-resistant Tru-Trak multi-directional rubber outsole- the Dunham Lexington lace-up shoe is a style you won't be able to afford to take off.