There are two key differences between the original Sleepea swaddle and the new Sleepea Comforter Swaddle. First, Sleepea Comforter Swaddle is insulated for extra warmth, making it the go-to swaddle sack for chilly nights and naps. It also features an off-center zip to make it easy to layer over PJs. But it still has all of the features that parents love about the original Sleepea, including our secure inner bands that keep babies wrapped tightly and snaps that allow babies to sleep arms-out.