This item was purchased as part of a set on December 25, Reiwa 7. I have one extra, which I am offering for sale, new and unopened. * Color and Material: Dark gray (glossy), 100% cotton * Size: Semi-double (Width 124cm x Length 200cm x Depth 30cm) * Attachment: All-around elastic (suitable for mattresses up to 30cm thick) * For reference, image 4 shows an example of how the product is attached.