The Ergococoon Hybrid Swaddle Sleeping Bag is a sleeping bag with a swaddle feature. From chest up it`s a 1 Tog swaddle – with organic stretch fabric and poppers in the arms to allow swaddling, and from chest down it`s a 2.5 Tog sleeping bag filled with organic cotton. The slimline fit and unique safety stretch inserts in the shoulders and sides allow the baby to move freely without getting tangled.