I've used it 2 or 3 times, and there are no noticeable stains. The color is ivory. The GU size is M. It fit perfectly with my 23cm feet. This is a new design of washable knit flat shoes. The soft texture of the knit, lightness, and flexibility provide a comfortable fit. The combination of a pointed toe and separation gives the feet a clean and neat impression. Because of the open design, it's recommended to wear them barefoot like sandals during the summer season. 【Functions and Materials】 - Machine washable, so you can wash them in your home washing machine. 【Notes】 ※Sizes 22.0cm and 25.5cm are only available online. Product number: 349462 Please note that the product number and product name on the tag may differ even for the same product. - Color: Ivory - Material: Mesh Thank you for viewing.