Size: 21cm Suitable for those with feet 21-23.5cm Width: 9cm Uses 10mm PP rope Woven tightly with genuine silk. Genuine silk is a natural material, so it has excellent moisturizing and breathability properties, which will make your soles beautiful and comfortable. Wearing five-finger socks or tabi socks will keep you warm even in winter. Because they are zori (sandals), the size can be used regardless of slight variations. Cloth zori also stimulate the acupressure points on your feet and can be expected to strengthen the muscles in your toes and soles, making them feel great. They may feel tight at first, but they will loosen up and conform to your feet after a while. They can also be used as a footrest, like as a half-foot rest. You can wash them by hand or in a washing machine using a laundry net, but there may be color fading, so please wash them separately. Please understand that due to being handmade, there may be some slight distortions or differences between the left and right.