A: Swaddling, like everything else, differs from child to child, but most little ones will be swaddled until about three months of age, at which point they’ll start wanting to stretch out. As long as your baby still enjoys being swaddled, stick with it! After that, you can transition them into the Halo Wearable Blanket, which gives them a little more room. As for sleep positioners, they’re used until around four months of age; when your baby starts trying to roll over, it’s time to remove them from the crib for safety.