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3-Layer Safety System to Prevent Baby Suffocation

Aug 01, 2025 By SwaddleAn

“Every night I wake up thinking my baby is suffocated under a blanket.” Does this ring a bell for you? We’ve all been there—checking our little one every single hour during the night just to make sure he or she is still breathing. Suffocation is the biggest nightmare that haunts parents every night.

Did you know that some familiar items in the sleeping room can be hidden enemies that trigger this deepest fear? No warnings here. We're here to help you get ahead of the risks.

With sleep sack safety as our goal, we'll show you how to prevent suffocation and keep your little one extra safe and sound. Together, let's create a safe sleep environment for our babies.


Identifying the “Silent Enemy”: The Top Sources of Suffocation Hazards

Soft and Loose Items in the Crib

This is the most dangerous enemy you should beware of. Soft and loose items like blankets, pillows, animal plushies, and especially crib bumpers are no-go. The American Academy of Pediatrics (AAP) also warns parents about the increased risk of Sudden Infant Death Syndrome (SIDS) associated with these items.

Baby laying in crib surrounding with blanket, pillows, soft toys. Parents shouldn't do this to prevent baby suffocation.
Soft and loose bedding items can cause suffocation.

They can be pulled up easily, covering the baby’s mouth and nose. Real-life examples for this case are everywhere.

One night, I heard my daughter moaning in discomfort. When she came to check, the baby was stuck in a corner of the crib with her face in a pillow.

Sophia
-
Mom of a 4-month-old daughter

We can only imagine how terrible it would have been if she had discovered it a bit later. The pillow and side guards Sophia put inside the crib were to blame. That’s why eliminating loose bedding is crucial step.

Unsafe Sleep Spaces

Experts advise against bed-sharing with parents, siblings, or pets. Because the baby can be overlaid during the night without you noticing it.

According to the AAP, even when your baby is still breastfeeding, sleeping with someone will increase the likelihood of SIDS. The risk is even higher for preterm babies, infants with low birth weights, or those under 4 months old. So, always let your little one sleep ALONE!

Likewise, sleeping on a sofa or couch is out of the question. Their little hands and legs can easily slip into the gaps between cushions, making it a struggle for them to breathe. 

Not to mention, if the baby rolls over, their face can sink into the soft surface, leading to suffocation. That's why we always recommend a firm, flat surface like a crib or bassinet.

Incorrectly Sized or Damaged Products

A baby sleeping safely in a snug-fitting sleep sack helps prevent baby suffocation.

An oversized sleep sack? A crib with slats that are too far apart? A mattress that doesn’t fit snugly? All of them can be the recipe for disasters. Loose sacks and gaps can cover or trap your baby, creating a serious suffocation hazard.

The Mechanisms of Suffocation and SIDS

Airway Obstruction

Keep that little face clear! Blankets and stuffed animals can easily cover a baby's nose and mouth, making it hard for them to breathe. Since babies can’t easily move their heads to clear their airways, this can quickly become dangerous.

Rebreathing Carbon Dioxide

If a baby's face is down on a soft surface like a pillow, they can end up re-breathing the same air they just exhaled. This air has a lot of carbon dioxide. When that happens, their oxygen levels can drop, leading to a serious situation. Experts believe this is one of the main causes of SIDS.


Building a 3-Layer Safety System

Layer #1: The “Bare” Sleep Environment

A rule of thumb is to keep a bare crib. You only need a firm, flat mattress with a fitted sheet. Nothing else. 

A common mistake is putting positioners or bumpers inside the crib to prevent your baby from rolling. Actually, rolling over is a huge and exciting part of their development! As long as you lay your little one down on their back, it's okay if they roll over after that.

Layer #2: The Safe Alternative - The Sleep Sack

Ditch all the loose blankets! The secret to a worry-free night's sleep is to switch to a sleep sack. A wearable blanket offers plenty of warmth and moves with your baby, so it can't slip over their face.

At SwaddleAn, we even go the extra mile with J-shaped zippers. These zippers make it harder for babies to unzip the sack themselves, tangle it up, or pull it over their faces. It’s also a breeze to change diapers with this design.


Layer #3: The Perfect Fit

Using a sleep sack is not the ticket to complete safety. But it's only safe and comfortable when the sack fits your baby snugly. One with a neck opening that's too wide can cause the baby to slide inside, posing a risk of suffocation. That's why knowing how should a sleep sack fit matters most.


The Final Anti-Suffocation Checklist

Here’s a quick checklist for busy parents:

INSIDE THE CRIB:

  1. Set up a completely bare crib (no blankets, no pillows, no crib bumpers, no animal plushies)
  2. Use a firm, flat, and well-fitted mattress
  3. Only use a fitted sheet

THE BABY:

  1. Put them on their back
  2. Use a sleep sack instead of a blanket
  3. Opt for sleep sacks that fit snuggly around the neck and arms
  4. Not wear a hat when sleeping inside

THE ROOM:

  1. No bed-sharing
  2. Ensure a smoke-free environment

Key to Worry-free Sleep

Preventing suffocation is no rocket science. Simply put, it’s all about eliminating unnecessary things and going for safer, smarter items. When you follow our guide, you're not just keeping your baby safe—you're also giving yourself the complete peace of mind you deserve.

Safety should always be a must, not an option, starting with choosing a suitable sleep sack. Shop our safe infant sleeping bag now and give your little one a haven for sound sleep.


Related Blog Posts

Ways to Create a Safe Sleep Environment for Your Baby

Knowing How Should a Sleep Sack Fit for Your Baby Safety and Comfort

3-Step Guide to Accurately Check Baby’s Temperature for Safe Sleep


References

  1. Safe Sleep: https://www.aap.org/en/patient-care/safe-sleep/
  2. Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment: https://publications.aap.org/pediatrics/article/150/1/e2022057990/188304/Sleep-Related-Infant-Deaths-Updated-2022
Dr. MONA

Dr. MONA

Pediatrician, Sleep Specialist

--Content is referenced by SwaddleAN from the sharing of Dr. MONA--
Dr. Mona Amin—a pediatrician, lactation consultant, and mom of two. My mission is to empower you with confidence on your parenting journey. Parenthood is one of life’s most challenging (and rewarding) adventures, and I’m here to help make it a whole lot easier.