Our TravelBound outsole is a lightweight siped blown rubber that offers boundless comfort. Stretchy fun upper with our signature toggle laces make this a wonderful travel companion. One piece stretch knit mesh with knit-in texture detailing and external leather heel counter support Age - Adult Care Instruction - Spot Clean Insole Description - Arch supporting high density Open Cell PU foam allows air to flow for a cooler, healthier footbed Outsole Description - Thermally controlled rubber provides long lasting responsive cushion that keeps feet energized Product Closures - Elastic bungee lace Size Description - M = Medium (B) Size Fit Information - True to Size Waterproof - Not Waterproof Upper Feature - Stretchable Technologies Medicare Approved:These styles have been approved for reimbursement under the Medicare Therapeutic Shoes for Persons with Diabetes Benefit (also known as the Therapeutic Shoe Bill). Flexible:These styles feature low-profile outsoles with extra flexibility to allow your feet to move more naturally. Removable Footbed:These styles feature footbeds that can be removed to accommodate custom orthotics. Stretchable:The perfect styles for feet with bunions or hammertoes or other conditions that require a little extra 'give.' Our stretchable leatherette, PU and neoprene panels mean feet will be comfortable no matter what.