Swaddling your baby safely

Wrapping (swaddling) a newborn can help them feel snug and settle, by gently containing the startle reflex that jolts them awake. Done safely, it’s a lovely soothing tool — but there are a few important safety points to get right, especially around hips, overheating, and when to stop.

Why wrapping helps. A firm but gentle wrap mimics the coziness of the womb and stops your baby startling themselves awake with their own jerky arm movements. Many newborns settle better wrapped, particularly in the early weeks.

How to wrap safely. Use a light, breathable wrap (like muslin or cotton), and:

• Wrap firmly but not tightly around the chest and arms — you should fit a couple of fingers between the wrap and your baby’s chest so their breathing isn’t restricted.
• Leave the hips and legs loose so they can bend up and out — tight, straight-legged wrapping is linked with hip problems (hip dysplasia). Room to kick is essential.
• Keep the wrap below the shoulders / away from the face and head, so it can’t ride up and cover their nose or mouth.

Always place a wrapped baby on their back. A swaddled baby must be put down to sleep on their back, never their side or tummy — this is critical, because a wrapped baby who rolls to their tummy is at higher risk. Follow all the usual safe-sleep rules alongside wrapping.

Don’t let them overheat. Overheating is a safe-sleep risk, so use a lightweight wrap, dress your baby appropriately underneath (not too many layers), keep the room comfortable, and don’t wrap over a hat or heavy clothing. Check they’re not too hot by feeling their chest or back of the neck — warm is fine, sweaty or hot is not.

Stop wrapping when your baby starts to roll. This is the big one: once your baby shows signs of trying to roll (often around 4–6 months, but it varies), you must stop swaddling their arms, so they can use their arms to reposition and keep their airway clear. Move to arms-out, a sleeping bag, or another safe option. A rolling baby who’s still wrapped is unsafe.

Wrapping isn’t essential. Some babies love it, others hate having their arms contained — and that’s fine. If your baby fights the wrap or doesn’t settle any better with it, you don’t have to swaddle. Safe infant sleeping bags (the right size, no hood, fitted neck and armholes) are a great alternative and can be used for longer.

Follow safe-sleep basics too. Wrapping sits alongside the core rules: baby on their back, on a firm, flat mattress, in their own safe sleep space in your room, with no pillows, loose bedding, bumpers or soft toys, face uncovered, and smoke-free. There’s a separate safe-sleep guide worth reading in full.

Swaddling can be a wonderful way to settle a newborn — just wrap firmly on top and loose at the hips, keep it light to avoid overheating, always sleep your baby on their back, and stop once they start rolling. If wrapping isn’t your baby’s thing, a safe sleeping bag does the job just as well. Your child health nurse can show you the technique if you’d like a hand.