ErgoPouch Cocoon Swaddle Bags are designed to be both easy to use and difficult to escape from. They are made from natural fibres GOTS certified organic cotton and bamboo 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.