niceeshop(TM) Waterproof Picnic Insulated Lunch Cooler Tote Bag Travel Zipper Organizer Box, White Blue High-Quality: 100% Organic Cotton, Soft and breathable Safe: Take place of loose blankets and help reduce the risk of overheating. Convenient: Inverted zipper make it easy to change diaper at night Comfortable: No constrain design for hips or legs so baby can move or kick with ease. Great Choice: Four sizes perfect to keep baby warm during the cooler nights. Small fits babies 10-18 lbs. Medium fits babies 16-24 lbs,6-12month; Large fits 22-28 lbs,12-18month; XL fits 26-36 lbs,18-24month