The Love to Dream Nuzzlin 1.0 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. It is so soft & comfortable that your little one will sleep comfortably all year round. The Love to Dream Nuzzlin 1.0 TOG Sleep Bag is gentle on your child's sensitive skin & is temperature-regulating to keep them comfortably cool & help reduce the risk of overheating. Features an extra-long zipper for easy diaper/nappy changes. 100% Cotton Lining & Outer . Luxuriously light, luxuriously soft.