I purchased this but it didn't fit my home mattress, so I'm reluctantly selling it. It has been opened but is brand new and unused. This is a Nishikawa product made in Japan. A box sheet specifically for tri-fold mattresses and bed mattresses. Made from high-quality 100% cotton in a satin weave. Its fine, smooth texture is appealing, with a calm, elegant sheen. As it's a natural fiber, it has good moisture absorption and breathability, providing a comfortable, non-stuffy feel. Offers a refined, high-quality, one-rank-up comfort. *There is no elastic on the back. This is so that when placed on a tri-fold mattress, it can be folded into three with the sheet still on. For 11cm gussets (D) 140×203×11cm Color: Ivory 100% Cotton (Antibacterial finish, pre-shrunk finish) <Made in Japan> #Mattress #Double #Sheet #BoxSheet