The HALO? SleepSack? wearable blanket replaces loose blankets in the crib that can cover your baby?s face and interfere with breathing. In addition to sleeping safer, the HALO SleepSack wearable blanket helps babies sleep better, too. It?s a warm cuddly blanket they can?t kick off; ensuring baby sleeps soundly throughout the night. Used in hospitals nationwide, the Halo SleepSack wearable blanket is the #1 choice of hospital nurseries and is the only product that carries the gold seals from leading safety organizations. HALO supports non-profit organizations like First Candle/SIDS Alliance and The Foundation for the Study of Infant Deaths.