The Professional Birki Clog, Constructed of Durable Polyurethane, Is Designed Specifically for Chefs. The Back of The Clog Is Higher to Cover the Heel of Your Foot. The Contoured Replaceable Inner Footbed is Made of Soft PU With Microfiber Coating & is Washable at 30'C / 86'F. The Clog is Waterproof & Washable in Temperatures Up To 60'C / 140'F - A Medium to Wider Width Fit.