This is an item from Belle Maison, a brand of Senshukai. The size is approximately 200 x 270 cm (measured at the four corners), a family size large enough for three futons. It's a cover that completely covers the mattress with elastic. I used it on two single beds, but it was too big and I had some extra, so I'm selling it because I bought a different one. The color is closest to the one in photo 4. I'm not sure if it's fleece, boa, or microfiber, but it's a warm material for winter. It was used for one season. As you can see in the photos, the surface has some areas where the fleece is matted, but there are no pills. The lining has some pills in the areas that rubbed. The elastic is not stretched out.