I purchased this, but unfortunately, it doesn't fit my mattress at home, so I'm reluctantly selling it. I've opened the package, but it's a brand new, unused item. It's a product of Nishikawa, made in Japan. This is a BOX sheet specifically for tri-fold mattresses and bed mattresses. Made with high-quality 100% cotton satin weave. It features a fine, smooth texture. It has a calm, elegant luster. Being a natural fiber, it has excellent moisture absorption and release, providing a comfortable, non-sticky feel. It offers an elegant, high-quality, and superior comfort. *There is no elastic on the back. When placed on a tri-fold mattress, it can be folded in three with the sheet on. For 11cm depth (D) 140 x 203 x 11cm Color: Ivory 100% cotton (Antibacterial and shrink-resistant processing) Made in Japan #Mattress #Double #Sheets #BoxSheets