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 beds, 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: plan to sleep with their baby but want to prepare baby bedding just in case, need bedding for naps in the living room, need spares for accidents like leaks or vomiting, or need bedding for trips home. If you want baby bedding at a good price, this is for you(^^) I will pack it as compactly as possible for shipping.