From Birkenstock, the Women's Profi-Birki Professional Water Resistant Clogs feature: Water-resistant PU (polyurethane) upper Certified occupational footwear Slip on design Fabric footbed lining Removable, anatomically shaped PU footbed, washable at up to 60°C Raised heel section and extended front to enclose the entire foot and promote a natural rolling motion with every step you take Non-slip, oil- and grease-resistant PU (polyurethane) outsole Imported.