The halo sleep sack early walker replaces loose blankets in the crib. With its unique foot openings, the sleep sack early walker wearable blanket allows for greater mobility while babies are awake, but also keeps little feet covered and warm while sleeping. In addition to helping your baby sleep safer, the halo sleep sack wearable blanket helps your baby or toddler sleep better, too. It is a warm cuddly blanket they cannot kick off; ensuring little ones sleep soundly throughout the night. The halo sleep sack wearable blanket becomes the trusted bedtime routine, providing the secure feeling he needs to fall asleep fast and sleep soundly throughout the night. Used in hospital nurseries nationwide, the halo sleep sack wearable blanket is the no-1 choice of hospital nurseries. Halo supports non-profit organizations like first Candle/SIDS alliance and the Canadian foundation for the study of infant deaths. Use over regular sleepwear to take the place of loose blankets. 100-Percent polyester lightweight knit. Meets federal regulations for children’s sleepwear. Size medium fits 16-24-pound; size large fits 22-28-pound; size extra large fits 26-26-pound.