Water-Resistant Leather With A Slip-Resistant, Non-Marking Outsole Made Of Rubber. Removable Coolstep Foot Bed Designed To Keep Foot Dry And Comfortable All Day. Laces Slide For Balanced Tension Across The Instep And For Easy On/Off. These Shoes Are Medicare And Diabetic Approved Shoes. Although Certain Sas Styles Are Deemed Medicare-Approved, Sas, Sasshoes.Com And Sas Retail Stores Are Not Responsible Filing Medicare Paperwork. Please Check Directly With Medicare Or Your Healthcare Provider For Instructions On How To File Your Claim.