Size One Size Fit : XS to M Shoe size : US 5-9 / UK 2.5-7 / EU 35-39 / 220mm-260mm Measurements Length : Approximately 43-50cm / 17-19.6 Inch Circumference : Approximately 17-36cm / 6.7- 14 Inch The size error may occur because of the item itself and the metric system of measurement. and the colors could be seen slightly different from its origins. because of computer monitor.