Set Contents: * Duvet cover * Summer duvet * Winter duvet * Fitted sheet * Fitted sheet cover * Baby pillow * Baby pillow cover ⚠️ No mattress included → I bought a separate washable mattress and used it. Purchased from Nishimatsuya and used. Bought 6 years ago and used by 3 children, but they quickly started sleeping in adult-sized futons, so each child's usage period was short. I don't see any major stains or dirt, but there are a few remaining pills. I tried to remove them as much as possible with a pill remover, but some remain. Recommended for those who are planning to sleep with adults but want to prepare baby bedding just in case, for naps in the living room, as a spare in case of bedwetting or vomiting, or for when visiting relatives. It's a great deal for those who want baby bedding! I will pack it as compactly as possible for shipping.