Purchased in June 2024. It's a set of two, as they are for twins. The colors are gray and pink. Used until around 6 months old. A waterproof mat was used during use. All covers can be removed and have been washed several times. There appear to be no noticeable stains or dirt, but please be aware that there may be oversights. *There is something like dirt on the box. Please check the photos. Will be shipped in the original bags and boxes. If you would like to purchase a single item, please comment. One will be sold for 10,000 yen. Thank you.