The lightweight summer sleeping bag made of soft cotton muslin is perfect for warm summer nights. The breathable material keeps baby nice and warm and avoids sweating or chilling out. The concealed zipper not only looks great, it also protects against cold and is gentle on the skin. The baby sleeping bag should fit as snugly as possible and fit snugly in the shoulder area. There should be no less than 10cm of space between the feet and the bottom edge of the sleeping bag.