Our Cocoon Swaddle Bags are designed to be both easy to use and difficult to escape from. This zip-up swaddle is TOG rated for warmth to keep a baby snug and securely swaddled without the need for complicated wrapping from day one. Being TOG-rated means that the 1.0 TOG swaddle can be used on its own in room temperatures between 21-24? / 70-75? with no blankets in the bassinet or crib to make this a safe sleep option for a newborn or baby and an ideal warm-weather swaddle. To increase warmth, parents can layer up underneath as needed.The Cocoon Swaddle Bag is made with GOTS certified organic cotton, with a touch of elastane. This means it's firm enough to restrict startle reflex whilst still allowing stretch and movement for healthy growth. The stretch also allows for full chest expansion when breathing, added comfort, and for a baby to move its hands into a self-settling position inside the swaddle. The soft, breathable organic cotton is certified non-toxic, dyed with water based dyes, and gentle on newborn skin, and skin prone to eczema breakouts. A zip enclosure also protects your child's delicate skin, and the handy arm poppers transition the Cocoon from an arms-in swaddle to arms-out sleeping bag when baby is showing signs of rolling. Finally, the two-way zipper makes for quick and easy diaper changes during sleep with minimal disruptions.