TEIJIN Waterproof Box Sheet Size: Single Color: Brown Purchased in 2025 from the official TEIJIN store on Amazon. It has been stored in the original packaging since delivery. I am selling it because I never used it. *A double size in greige is also available. It seems that the available colors and sizes vary depending on the time of year at the official store, and sometimes they are not sold. Thank you for your understanding regarding this item being stored at home.