This is a lightweight and warm down sleep sack. It's a popular item for gifts. * A button is attached at the crotch to prevent the sleep sack from riding up. * Can be used for babies before they can hold their heads up. * Protects active babies from getting cold while they sleep. * The inner padding uses domestic down. * Provides warmth like being wrapped in a futon, and can be used as room wear or for cold protection in winter. * Can be used for a long time, from newborns to around 3 years old. Size: Width 48cm, Length 60cm Material: (Outer fabric) 40/2 jersey print, (Lining) 40/2 jersey, (Piping) pile Quality: (Outer fabric, Lining) 100% cotton, (Piping) 76% cotton, 24% polyester, (Inner padding) 90% down, 10% feather Only washed with water, never used.