Room shoes are an essential element in every Japanese home. This breathable version is made from pill-free Sasawashi fabric that naturally absorbs moisture and odors. Antibacterial kumazasa extract and breathable washi fabric keep these slippers feeling fresh and comfortable with or without socks year round. *Runs large To know which size is best for you, put on the type of socks you'd typically wear with your room shoes, stand up and measure your foot. Compare your measurements to the ones provided to make sure the fit is right. Size up if you have wide feet. For a snug fit, consider sizing down as these slippers are designed for a loose, comfortable fit. *The width of these slippers may vary as the footbed closely mimics the curvature of the foot.