Single futon for kotatsu, 5mm thick urethane-filled futon type, 190 x 240, with premium blanket on the back, modern stripe, voluminous kotatsu futon ▼The underside of the mattress has a non-slip surface The underside of the mattress is lightweight yet has a non-slip surface, making it perfect for homes with small children or pets. It's covered with non-woven fabric, so it's gentle on the flooring, which is a nice feature! This futon mattress is a convenient piece of furniture that can be used all year round! Use it as a living room rug. It also helps protect your flooring from scratches. It has a smooth texture that makes it comfortable to wear even in summer. Autumn: It's still too early to use the kotatsu, but it's a little chilly. In such cases, it can be used as a hot carpet cover.