Most of them are designed as a dual-purpose type that can be opened into a quilt, which can be used as a quilt, or can be folded in half and closed with a zipper to form a sleeping bag.
Simple structure, generally use double-head zipper, the bottom can be opened, convenient for changing diapers, etc. And because of the dual-purpose quilt sleeping bag, the practical function of the product is enhanced, the space is large, and the baby can move freely without being restrained.