Ladies European Whole Sizes (U.S. equivalents): 36 (US 5 1⁄2-6), 37 (6 1⁄2-7), 38 (7 1⁄2-8), 39 (8 1⁄2-9), 40 (9 1⁄2), 41 (10), 42 (10 1⁄2-11).