The only thing cozier; the womb. The other parents will be jealous of your sleep with this bamboo swaddle wrap and our easy-change WONDERZiP® to keep baby swaddled during diaper changes. Simply zip them up, arms in or out, with an optional built-in belly band. They’ll stay uber cozy + covered, surrounded by silky soft bamboo rayon with a wider, more comfortable fit to fold legs in the natural frog position.