1.The EUR size is not standard, Just convenient for you to do order.Please choose size depend on insole length.2.The way to choose perfect shoes for you.Foot length+0.5~1cm=insole length. Such as Please measure your foot length as below.If your foot length is 23cm,you can add 0.5~1cm.That's to say,choose inside length 23.5~24cm.Thank you for your support.3.Because of different measuring methods,there may be about about 0.5cm error,belongs to normal.4.If you don't know how to choose the size,please tell us your foot length (cm) ,we will choose for you.Please tell me what's your foot length(cm). Winter Style.Please choose one size bigger.Зимний стиль. Пожалуйста, выберите на размер больше.