This is a family-size box sheet from Nitori. I am selling two sheets together. There was no "family size" option in the category, so it's listed as "wide double," but the actual size is 200x240cm. My household uses a single + double setup, but a semi-double + semi-double setup is the same size. With the Luxury series, the sheet's depth didn't fit well due to the thickness of the bed. The tag in the second photo says "mattress protector," but this listing is for two box sheets only. The color is gray, but it has a sheen and looks silver-like. I used it once and washed it, but there is some discoloration on the tag. The sheets themselves appear to be clean, but this is a personal inspection, so please be understanding if you are concerned. Thank you for looking.