Swaddling is a popular technique for helping restless babies sleep. When one mom couldn't find a swaddle that worked for her son, she decided to make her own — the Swaddelini.

This means ensuring the swaddle is snug, but not too tight, and placing babies on their backs to sleep. You should stop swaddling your baby once they show signs of rolling over, which can happen ...

For ease of distinction, we’re saying swaddles are arms-in (i.e., for use up until the startle reflex abates) and sleep sacks are arms-out (i.e., a wearable blanket for babies ages 4 months and up).