This is a dedicated sheet for the Healthwave Gold DX. I purchased two new ones here, but the firm mattress didn't suit me, so I got rid of it quickly. This sheet was only used for about two months and is in good condition. There might be a slight discoloration, but it's difficult to capture in photos. Otherwise, it's as white as new. I think I discarded the other one after using it in the summer, as it had some discoloration. Original price: 13,200 yen (tax included) for one sheet (originally two) Approximately 110cm wide x 200cm long x 10cm thick Seller: Nihon Chokuhan Sohonzha Chiropractic Shipping will be without the box.