TEIJIN Waterproof Box Sheet Size: Double Color: Greige Purchased in 2025 from the official TEIJIN store on Amazon. Stored in the original packaging from delivery. I am selling it because I ended up not using it. *A single brown sheet is also available. The colors and sizes sold by the official store seem to vary depending on the time of year, and this greige color may not always be available. Thank you for your understanding regarding this item being stored at home.