Swaddling looks effortless in every hospital pamphlet and parenting video, just a few quick folds and you get a peacefully sleeping baby. Actually doing a proper swaddle with your own wiggly newborn takes a lot more practice.

An incorrect swaddle can affect your baby’s hips or breathing, so it’s crucial to get it right.

Here’s how to swaddle a baby properly, types of swaddles to choose from, and how to keep your baby safe while they’re wrapped up.

What Is Swaddling and Why Do Babies Need It?

Swaddling is the practice of wrapping your baby in a lightweight blanket to gently hold their arms and legs close to the body, recreating the snug feeling of the womb. Done well, it calms the Moro reflex, the natural startle response that often wakes newborns from a sound sleep.

The Moro reflex is a protective instinct babies are born with. A sudden noise, a quick movement, or even the sensation of being set down can make your baby throw their arms and legs outward, then pull them back in fast. During sleep, that same jerking motion often wakes your baby right back up, and you end up with a baby who startles awake every 20 minutes. That’s exhausting for everyone, including your baby.

Most babies benefit from swaddling from birth up until they start trying to roll over, which for many babies starts around four months, though some begin trying earlier.

How to Swaddle a Baby Properly: Step-by-Step

To swaddle a baby with a traditional blanket, lay them on their back, wrap one side snugly across their chest, fold up the bottom for their legs, then bring the other side across and tuck it beneath them.

Here’s the full technique:

1. Lay a thin, breathable swaddle blanket flat on a safe, firm surface, and fold the top corner down by about six inches.
2. Place your baby on their back with their head resting just above the folded edge, so the blanket can’t ride up over their nose or mouth.
3. Hold your baby’s left arm gently at their side, elbow slightly bent, then bring the left side of the blanket across their chest and tuck the edge underneath their right side.
4. Fold the bottom of the blanket up and over your baby’s feet, leaving plenty of loose fabric so their hips and legs can still bend and move freely.
5. Hold their right arm down the same way, bring the remaining side of the blanket across their chest, and tuck it beneath them on the left.
6. Slide two fingers between the blanket and your baby’s chest. You should feel a snug fit, not a tight one. If you can’t fit your fingers in at all, loosen the wrap so your baby can breathe easily and fully expand their chest.

Shop our range of swaddle blankets designed to make sleep time a little easier.

Tips for Keeping a Swaddled Baby Safe

Swaddling is just one part of baby sleep safety, but it’s an easy one to get wrong if you’re exhausted, so keep these safety tips in mind:

• Always place a swaddled baby on their back to sleep, never on their stomach or side.
• Dress your baby in light layers underneath the swaddle so they don’t overheat.
• Stop swaddling the moment your baby shows any sign of rolling
• Keep the crib clear of loose blankets, pillows, and stuffed animals.
• Use a firm, flat mattress on a crib that meets current safety standards.

Swaddling isn’t intended to be done forever. According to Debbie Gerken, certified pediatric sleep coach at Sleep Like a Baby Consulting “As soon as a baby is showing any signs of rolling to their side or rolling over during the day, parents should stop using the swaddle. This allows a baby to safely have access to their upper body and arms if they should have these movements for sleep.”

According to Statistics Canada, roughly 110 infant deaths in Canada each year happen during sleep. The majority happen in an unsafe sleep environment, meaning at least one of the risk factors outlined in the Joint Statement on Safe Sleep was present (like overheating or loose bedding). None of these risks are unique to swaddling, but a swaddle that’s too warm or too loose can make an existing risk worse, which is exactly why the fit and fabric matter as much as the wrap itself.

If your baby is swaddled safely but still isn’t settling well, the issue might be something else entirely, like room temperature, feeding timing, or overtiredness.

How to Choose the Right Swaddle for Your Baby

There are three main styles of swaddles to choose from: traditional swaddle blankets, structured swaddle sacks, and TOG-rated sleep bags.

Swaddle Blankets

A swaddle blanket gives you the most control. It’s just a large, lightweight square of cotton or muslin, which makes it easy to adjust as your baby grows or gets squirmier, though it takes a bit more practice to wrap them securely each time.

Structured Swaddle Sacks

If wrapping a traditional swaddle blanket feels like just one more skill to learn at 3 a.m., when you can barely remember your own name, a structured swaddle sack does the hard work for you. These pre-shaped wraps use zippers or fabric wings instead of loose fabric, so there’s less unwrapping mid-sleep and less chance of loose material ending up near your baby’s face. Some styles leave the arms free near the face too, which some babies prefer over having their arms pinned flat to their sides.

If your baby fights having both arms pinned down, an arms-up style is worth trying before you give up on swaddling altogether. It still calms the startle reflex around the chest and hips while letting your baby bring their hands up near their face, which is often enough to settle a baby who otherwise squirms their way out of a traditional wrap.

TOG-Rated Sleep Bags and Blankets

You’ll also see sleep bags and blankets labelled with a TOG rating, a number that tells you how warm the fabric is. A lower TOG suits a warm room or summer nursery, while a higher TOG works better for a cooler room, so you’re not guessing whether your baby needs another layer underneath.

Whichever style you land on, the fit around your baby’s hips matters as much as the fit around their chest. Their legs should be able to bend up and spread out into a natural “M” shape, not get pinned straight down. The International Hip Dysplasia Institute points to Japan’s experience as proof of how much this matters: after the country moved away from a straight-leg swaddling style, infant hip dislocation rates dropped from roughly 3.5% to under 0.2%.

Swaddling Doesn’t Have to Feel Overwhelming

Swaddling can feel like a lot to get right when you’re running on no sleep, but it comes down to just three key things: make it snug around the chest, loose around the hips, and put them to sleep on their every time. Once you’ve got the technique down, it becomes one more tool that makes those early weeks a little calmer for both you and your baby, right up until they master the great swaddle escape.

Find traditional swaddling blankets, sleep bags, and more at Well.ca.

Frequently Asked Questions About Swaddling

How long can you swaddle a baby each day?

Swaddling is meant for sleep time, so keep your baby swaddled for naps and nighttime sleep, then unwrap them during awake stretches for tummy time and free movement.

Should you swaddle a baby for naps as well as nighttime sleep?

Yes. Swaddling for both naps and nighttime sleep helps build a consistent, calming sleep routine, as long as you always lay your baby on their back on a firm mattress.

What if my baby doesn’t like being swaddled?

Don’t force it. If your baby fights the wrap or cries every time their arms are tucked in, try an arms-up swaddle style or a hands-free sleep sack instead.