Happiest Baby CRIB Swaddle/Sleep Sack (not for the snoo) size small. This is the most underrated crib swaddle. You can swaddle with arms down and then arms out when baby is older. You can get this swaddle/sleep sack for the snoo but this one is for a crib. It does not have the wings for the snoo. Size small: 5-12 lbs This listing is for the moon pattern. Not stars. I have another listing for the stars. Pet friendly and non smoking house.