Whether you are camping, going on a road trip or just have kids over for a sleepover, the Jilong 2-in-1 Twin Size Air Bed with Sleeping Bag is a great sleeping solution. The sleeping bag zips on to the air bed, so it won’t slip off, however both the bed and the sleeping bag can be used separately if you are in a jam. The sleeping bag top shell is polyester taffeta 190T and is waterproof (great for campers). The inner layer is also polyester, with a polycotton lining. The fill is hollow fiber.