How to dress baby for winter sleeping ergoPouch AU Winter is here! We know it can be confusing to know what sleepwear your baby needs as the temperature starts to drop. With this simple guide you can see what sleepwear is How to dress preemie babies for sleep at night? When winter rolls in, it's natural to wonder if your baby is warm enough at bedtime. To make those colder nights feel a little simpler, we've put together a handy sleepwear guide