Sizing suggestions: IF wearing with our No-Slip Machine Washable Flat Socks, wear true to size. If wearing barefoot, go down a half size from normal. Keep in mind these should be snug at first because they will stretch with wear. Side stretch elastic panels, slip-on silhouette EVA midsole for lightweight shock absorption and cushioning Duratread™ outsole provides maximum wear resistance and flexibility Ariat Style 10023008