The Love to Dream Nuzzlin 0.2 TOG Sleep Bag is made from extra light 100% knitted cotton “New Generation Muslin Fabric”. It was designed with your child's comfort in mind. “New Generation Muslin” is so light & soft that your little one will sleep comfortably even on the warmest nights. It is also perfect for day sleeps. The Love to Dream Nuzzlin 0.2 TOG Sleep Bag is gentle on your child's sensitive skin & temperature-regulating to keep them comfortably cool & help reduce the risk of overheating. Features an extra-long zipper for easy diaper/nappy changes. The lightest sleep bag available.