This is a set of two items: the Unsleep (Bamboo Cover) and a Velcro strap. ◉ Unsleep (Bamboo Cover) Retail price: 15,400 yen There are no noticeable stains. It has been used for about 4 months, so there is some wear and tear. Please consider purchasing if you can accept the overall fine pilling/fuzzing (see image 6) and looseness of the tie strings (see image 7). ◉ Velcro strap Retail price: 2,900 yen Only opened, never used. According to reviews on the official website, this strap seems to further enhance the sleep-inducing effect. Unsleep is a baby pillow specifically designed for babies' sound sleep and skull formation. If you are concerned about your baby's sleep, are considering measures to prevent flat head syndrome, or want to try a pillow specially designed for your baby, why not give this a try? I myself struggled a lot with my baby's sleep problems, but Unsleep really helped!