Room Shoe Sizing Tips: Room shoes are designed for maximum comfort and are very forgiving when it comes to sizing, but it is important that your foot is not larger than the footbed. To ensure a proper fit, put on the type of socks you plan to wear with your room shoes and measure the length of your foot (in centimeters) while standing. Compare this measurement with the Japanese sizing in the chart below - which is also measured in centimeters - to determine the appropriate size. If you fall between sizes, round up, and if you have particularly wide feet, consider moving up one size. For more tips, check out our Rikumo Journal post on achieving a perfect fit.