How to swaddle a baby using the Cocoon Swaddle Sack

Learn how to swaddle your baby for safety using the Cocoon Swaddle Sack

The Cocoon Swaddle Sack is a zip-up swaddle for your newborn or baby to sleep in, without the need for blankets in a bassinet or crib environment. The snap closure at the shoulders allow you to transition the swaddle into an arms out sleep sack once baby shows signs of rolling, or for babies who don't like to be swaddled from birth. Watch our video above to learn how to swaddle a baby using the Cocoon Swaddle Sack, or follow the steps below.
Step one Step one

Step one

Lay the Cocoon on a flat surface with snap closures fastened and zip open.
Step two Step two

Step two

Lay your baby on top of the Cocoon Swaddle Sack. Fasten zip with baby’s hands in desired position (by sides, or across chest).
Step three Step three

Step three

To change a diaper or to cool down baby, unzip from the bottom to release legs and lower torso. Re-fasten zip.
Step four Step four

Step four

To transition to arms out sleeping, unfasten snap closures and release one arm at a time over several days.
Step five Step five

Step five

If your baby does not like being swaddled, it is safe to sleep arms out from birth.
Step six Step six

Step six

Refer to the Room Thermometer and Dressing Guide included with every new pouch for guidance on how to choose the right TOGs and layers for your baby.
Step seven Step seven

Step seven

Always sleep your baby in a safe sleep environment. A loose blanket is not required when using this product.

Let’s check the fit!

An important safety element when using the Cocoon Swaddle Sack is to ensure it's correctly fitted to prevent the product from riding up around your baby’s face. Here’s how you can check you’ve got the right size.

  1. Check you have the correct size according to your baby's weight using our Size Guide.
  2. Put the Cocoon Swaddle Sack on your baby as you intend to use it (arms in or out).
  3. Slip two fingers into the neckhole of the Swaddle, and onto baby's chest. The material should feel firm and comfortable on your fingers, but not tight.
  4. Check your baby's hips and legs. Your baby's knees should be able to flop outwards in a frog like position without any restriction. Tight swaddling across the hips that hold the legs together is thought to contribute and increase developmental dysplasia of the hip (DDH).

Please do not be tempted to upsize, to get more wear out of the swaddle. A larger size may cause the material to gather around your baby's face.

If in doubt, feel free to chat to our friendly Customer Service team who can help you check the fit for your baby.

Swaddle Size Guide

ergoPouch size Newborn 0–3M 3–6M 6–12M
Same as size 0000 000 00 0
Pouch length 20.5"
30" (0.2 & 1.0 TOG)
31.5" (2.5 TOG)
Child weight 4-11lbs
Child height 21"

Understanding TOG ratings

Your Cocoon Swaddle Sack comes with a TOG rating. TOG stands for Thermal Overall Grade and is a unit of measurement for insulation and warmth of sleepwear and bedding. Put simply, the lower the TOG rating the lighter the fabric. The higher the rating, the more padded and insulated it is for warmth. TOG-rated fabrics are important as your baby cannot regulate their temperature like adults can. Learn more about TOG ratings.

Included in your pouch packaging is a Room Thermometer and Dressing Guide. Simply read the thermometer to find the room temperature of your baby's sleep environment, then follow the Dressing Guide on the front of the thermometer. The guide will inform how to layer your baby for sleep based on the TOG rating of your swaddle, and the temperature of your room. Simple, smart and sanity-saving!

Understanding TOG ratings

What TOGs does the Cocoon Swaddle Sack come in?

Choose from three TOGs for comfortable sleeping no matter the temperature.

Extend the life of your Cocoon Swaddle Sack

Your Cocoon Swaddle Sack is made from GOTS certified organic cotton and elastane*, and filled with GOTS certified organic cotton. When cared for properly, this product will last several years and can be used for more than one baby. Our TOGs don't lose their warmth ratings over time, but a gentle fluff up in the dryer on a low setting helps maintain the fiber's loft, allowing air to circulate more effectively.

If you've received a second-hand Cocoon Swaddle Sack, check for loose threads, stable zips and any stretch around the neck before using. Contact our Customer Service team if you're unsure if you have received the correct size for your baby's weight.

*1.0 TOG Cocoons also contain bamboo viscose for added stretch.

How to wash and dry your Cocoon Swaddle Sack

  • Gentle cold machine wash
  • Low tumble dry
  • Moderately hot iron
  • Dry cleanable
  • Do not use bleach based stain removers
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FAQs for swaddling your baby

Do I use blankets on top of the Cocoon Swaddle Sack?
The Cocoon Swaddle Sacks are TOG rated meaning they have an insulation grade making them warm enough to use for sleep without loose bedding, and are designed to replace blankets. It is recommended by safe sleep guidelines to sleep your baby with their face and head uncovered, and their bassinet or crib free from loose bedding, pillows and toys. If your baby needs extra firmness and comfort to help with their startle reflex during sleep, our Baby Tuck Sheet is a safe-sleep approved option to use over the top of the swaddle.

How do I know if I have the right TOG to keep them warm enough?
Included in your Cocoon Swaddle Sack packaging is a Room Thermometer and Dressing Guide. Place the thermometer in your baby's sleep environment to check room temperature. Once room temperature is established, use the table to guide you on the correct TOG and under-Layers combination. The Cocoon Swaddle Sack comes in three different TOGs to ensure your baby is comfortable no matter the room temperature. Our organic cotton fibers are excellent at keeping your baby warm, while being breathable to maintain a comfortable and safe sleeping temperature.

My babies hands feel cold. Are you sure I have the right TOG?
It is normal for a newborn baby's extremities to feel cold to the touch during sleep, as their circulatory system develops. Their body is prioritizing blood flow to keep the core warm and supply blood to vital organs. A better test for your baby's warmth is to put your hand to the skin on their nape or chest. If their skin feels warm and dry to touch in these areas, your baby is warm enough during sleep despite cold hands. If your baby feels cool to touch on the nape or chest, they are too cold and may need to go up a TOG in the swaddle, or need extra layers underneath. If they feel sticky or hot to touch, they are overheating and require less layers or a lower TOG rating for their swaddle.

Can I use the Cocoon Swaddle Sack with arms out from birth?
Absolutely! The Cocoon Swaddle Sack is designed to be worn arms in or out. Not all babies like to be swaddled, and if your baby is fussy when putting the swaddle on or fighting it during sleep, try releasing their arms using the snap closures. Your newborn will still be sleeping safely in a TOG-rated sleep sack that is appropriate for their age and stage.

Does the Cocoon Swaddle Sack cause chest compression?
When the correct size for your child's weight is used, the Cocoon Swaddle Sack should be a firm fit to control the startle reflex, but should not cause chest compression. Every Cocoon Swaddle Sack is made with stretchy elastane for both comfort and to enable unrestricted breathing when used with arms in or out.

How long can I use the Cocoon Swaddle Sack for?
When using the Cocoon Swaddle Sack as an arms in swaddle, it is safe to use until your baby shows signs of rolling over. Once your little one shows signs of rolling, it’s time to transition to arms out sleeping for their safety. Simply open the snap closures and transition one arm out at a time over several days. As an arms out sleep sack, the Cocoon Swaddle Sack can be used as a safe sleep sack up to 12 months old; simply follow our Size Guide to ensure you are using the correct size for your baby's weight.

What does my baby wear under the Cocoon Swaddle Sack?
This will vary from a diaper, through to warm pajamas/onesies depending on the room temperature. Follow our What to Wear dressing guide (included with your swaddle) to layer appropriately underneath, according to your room temperature and what TOG swaddle you use. ergoPouch's Rompers are also TOG rated to help make dressing for sleep easy.

Do I need to remove the Cocoon Swaddle Sack when doing overnight feeds or diaper changes?
This is optional, but the short answer is no. Your baby can remain swaddled for a feed, but you may wish to unswaddle for comfort and burping. You do not need to remove the swaddle for diaper changes. Simply unzip the swaddle from the bottom to release the legs and change a diaper.

Can I use the Cocoon Swaddle Sack for sleep on the go with baby?
The Cocoon Swaddle Sack can be worn if sleeping in a bassinet-style stroller attachment or travel bassinet/crib, but cannot be used in a five point harness. Please do not put your baby in a car seat wearing the Cocoon Swaddle Sack.

Can my baby sleep with their arms up in a Cocoon Swaddle Sack?
A baby won't be able to get their arms all the way up to the sides of their head in an ergoPouch Cocoon Swaddle Sack. Instead, our swaddles are made from a stretchy fabric to allow for natural arm movement around the body. We find that babies will wriggle their arms and hands into a position that is most comfortable for them. The sack is stretchy enough for your baby to bring their hand to their mouth for self-soothing if they are inclined.

If your newborn baby prefers to sleep arms out (i.e. not swaddled) – that’s OK! Simply open the snap closures to let their arms out. The Cocoon Swaddle Sack is still the warmest, safest solution for non-swaddled newborn babies during sleep.

How many swaddles do I need?
We recommend that you start with at least two Cocoon Swaddle Sacks, one to wear and one in the wash. A baby can be a messy creature with leaking diapers and spitting up milk constantly! If baby's room is warmer during the day and cooler overnight, opt for two swaddles in each TOG rating. For example, two 1.0 TOG swaddles and two 2.5 TOG swaddles during cooler months, or two 0.2 TOG swaddles and two 1.0 TOG swaddles in warmer months. You can use the cooler TOG rating for day sleeps, and the warmer TOG rating for night sleeps.

Does the Cocoon Swaddle Sack come in a 3.5 TOG?
The Cocoon Swaddle Sack does not come in a higher tog than a 2.5 TOG. This is reduce the risk of overheating, by dressing a baby too warmly for sleep. A young baby cannot regulate their body temperature like an older child or adult does, and has not yet developed the ability to sweat if they are too hot.

If you are finding your baby is waking by being too cold, consider increasing their Layers underneath, or using a light layer such as the Baby Tuck Sheet on top (for babies not yet rolling).

When can my baby move to a 3.5 TOG pouch (if they outgrow 0-3m size before they are 3 months)?
Once your baby is sleeping arms out and older than 12 weeks, a 3.5 TOG pouch may be suitable for them. You might also consider a sleeveless 2.5 TOG pouch with Arm Warmers over top.

Safety tips for swaddling a newborn or baby

  • Not suitable for use in a 5 point harness. Please don't put your baby in a car seat while wearing the Cocoon Swaddle Sack.

  • Babies don’t regulate their body heat very well and rely on their coverings to keep them warm but not hot. Do not overdress a baby underneath their swaddle and never cover their head during sleep (e.g. with a hat or beanie). Follow our What To Wear Guide to safely dress your baby for sleep and to avoid overheating.

  • When your baby shows signs of rolling (usually from 8 weeks), it's time to open the snap closures to release their arms for safety. If they do roll onto their stomach during sleep, their free arms will assist them in lifting their head to the side for unobstructed breathing.

Safety tips for swaddling a newborn or baby

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