Many stretchy wraps claim you can wear them until your baby is 30 to 45 pounds. But even though it might be safe to wear your baby in a stretchy wrap for that long, it will probably start being uncomfortable long before then.
Once your baby reaches 17 to 20 pounds, your baby’s weight will likely start pulling at the fabric more. Your baby will also start to discover the fabric as they get older and pull on it themselves. Both of these can cause the need to readjust and retie your wrap often to keep it snug.
Eventually, your baby will start looking around and moving toward the world around them. This will put further strain on the stretchy wrap and increase the chances of it becoming loose or your baby falling out of it.
Once you start to notice your baby’s weight causing your wrap to become loose or your baby beginning to lean out of the wrap, it is best to move to a woven wrap or another type of carrier. This will keep your baby safe and give you peace of mind.