From Vionic, the Men's Walk Max Lace Up Mesh Sneakers feature: Breathable mesh fabric upper Water repellent upper treated with a protective coating to help against inclement weather Received APMA Seal of Acceptance Lace up closure Back pull tab Removable mesh covered EVA footbed Backed by Heeluxe, the men's Walk Max delivers superior arch support and exceptional stability built to last all day Vio Flex insole featuring a flexible, lightweight compound offering optimal moisture control including a perforated heel for added breathability Vionics' Super Critical Foam midsole is nitrogen infused offering the highest rebound to enhance your walking motion Durable synthetic rubber outsole Imported.