The warmest member of the ergo Cocoon by ergo Pouch family, the 2.5 tog baby swaddle has a built in blanket filled with pure organic cotton for maximum breathability and softness. Are you in two minds about swaddling your baby? If so, then the ergoCocoon 2 in1 Hybrid is the perfect option for you. From chest up it's a 1 Tog ergoCocoon, whose stretch fabric allows for swaddling, and from chest down, it's a 2.5 Tog quilted baby sleeping bag filled with organic cotton. As a swaddle, it keeps baby feeling safe and cozy, and as a sleeping bag, it replaces traditional blankets, eliminating risks of kicking off covers and entanglement- and thus helping to prevent SIDS. So your baby sleeps in a safe, healthy, and comfortable environment all through the night. Now with poppers in the arms for an easy transition into a sleeping bag when your baby is ready, it converts into sleeping bag. So you get a swaddle and sleeping bag from one product. Features Warm weight - can be used without blankets for room temperatures 18c-23c (65F-73F) Organic stretch cotton with an inner layer of super soft stretch Bamboo terry at the top and filled with organic cotton at the bottom. Skin-friendly, breathable natural fibres. Super stretchy to allow for natural movement. Poppers in the armholes to help you transition your baby to arms free. Use as a sleeping bag when your baby no longer needs swaddling. 2-way zipper for easy nappy (diaper) change. Once your baby is able to roll you should discontinue swaddling and allow their arms to be free.