Halo SleepSack Wearable Blanket, RainbowsDescription The Halo SleepSack wearable blanket replaces loose blankets in the crib that can cover your baby's face and interfere with breathing. It's a warm cuddly blanket they can't kick off; protecting babies from catching cold (and getting sick). It provides a warm cocoon that helps babies sleep better, thus promoting healthy physical and mental development. Product Details Recommended by doctors in place of loose blankets for safe sleep.