Recognized as an expert in safe sleep the HALO® brand is the #1 choice of over 2 000 hospitals nationwide. HALO® SleepSack® is an award-winning wearable blanket for safe sleep. It’s also the recommended next step after SleepSack Swaddle for a seamless transition without losing sleep. Design details include a zipper that opens from the bottom for easy diaper changes and a roomy extra long sack. That means it’s hip healthy and you won’t have to size up as quickly. 100% cotton fabric is soft super cozy and gentle on baby skin.