Confirm slippers size according to your shoe size or by measuring the length of your feet (as shown on the size or measuring chart below). If uncertain between two sizes, it’s better to chose the larger than the smaller size. eg: if your size is 38, it’s better to go for XL considering the socks thickness and comfortable fit. For mens sizes it’s worked out 3 sizes smaller. If it is 2XL it means M. Preffer to use length measurements for precision. (Click text images to enlarge).