I'm making these using new fabric that has been pre-washed. It's 100% cotton. These should fit those who wear a shoe size of around 25-26 cm. You don't need to be too strict about the size, like with shoes. The width is 9.5 cm. You can wash these at home and wear them repeatedly. They will become more comfortable with wear. These are handmade, so there may be slight variations. The color may appear slightly different depending on your monitor. Thank you for your understanding.