Home » Baby Sleeping Bag Guide: Comfort & Safety for Your Little One

Baby Sleeping Bag Guide: Comfort & Safety for Your Little One

Welcome to your go-to baby sleeping bag guide. Find out how to pick a secure, snug, and suitable sleeping bag that promotes your baby’s safe and sound rest.

Key Takeaways

  • Baby sleeping bags should prioritize safety with a snug neck, sleeveless design, and conform to safety standards. Material choice such as organic cotton improves breathability and comfort.
  • Appropriate tog ratings aligned with room temperature are crucial for preventing overheating; for example, 3.5 tog for under 14°C rooms and 0.5 tog for 23-26°C rooms.
  • Regularly checking and maintaining a consistent room temperature between 16-20°C assists with safe and comfortable sleep, as does selecting a correctly sized sleeping bag based on the baby’s weight and age.

Essential Features of Baby Sleeping Bags

Breathable baby sleeping bag

Several key features should be taken into account when choosing a baby sleeping bag. Here are some important considerations from our Baby Sleeping Bag Guide:

  • The sleeping bag should eliminate the need for additional covers, reducing the risk of suffocation and ensuring the baby maintains a safe temperature.
  • The bag should allow for free movement, promoting both comfort and safety.
  • It should have a snug-fitting neck and sleeveless design to prevent babies from slipping inside.

The choice of materials is also significant. Natural fibers like organic cotton or bamboo help reduce the risk of overheating. They create a breathable environment, thereby protecting the baby’s delicate skin. Additionally, soft seams, no exposed zips, and absence of tags are crucial design aspects to prevent skin irritation. Lastly, always opt for a baby sleeping bag that conforms to safety standards such as BS 8510:2009.

Understanding Tog Ratings

‘Thermal Overall Grade’, abbreviated as TOG, is a rating system in the textile industry that measures the warmth provided by clothing or duvet. In the context of baby sleeping bags, tog ratings are crucial for maintaining a safe temperature, which directly affects a baby’s safety and comfort.

The correct tog rating for a baby sleeping bag is determined by factors such as room temperature and the weather outside. This ensures that the baby remains comfortable and safe, regardless of whether it’s a cold winter night or a warm summer day.

Material Matters

The chosen fabric for a baby sleeping bag significantly influences the baby’s comfort and safety. Breathable fabrics like super soft cotton are essential as they protect the baby’s skin and help to regulate the baby’s temperature, ensuring the baby’s delicate skin remains healthy.

Whether it’s 100% cotton, pure organic cotton, or super soft (jersey) cotton, these materials exemplify the use of breathable fabrics in baby sleeping bags. Such fabrics help create a comfortable and safe sleeping environment for your little one.

Design for Development

A baby sleeping bag’s design extends beyond aesthetics; it also affects your baby’s health and safety. Some sleeping bags, like the HALO SleepSack wearable blanket and the ergoPouch Jersey Sleeping Bag, are recognized by the International Hip Dysplasia Institute for their roomy designs, promoting healthy hip development.

Furthermore, a wearable blanket such as the HALO SleepSack can serve as a substitute for loose blankets in the crib, mitigating sleep-related risks by preventing the baby’s face from being covered and ensuring clear breathing. And, to further reduce the risk of sudden infant death syndrome (SIDS), it’s recommended to clear cots of bumpers, toys, and loose bedding.

Baby Sleeping Bag Guide: Dressing Your Baby for Bedtime

Baby sleeping bag for warm weather

Selecting appropriate bedtime attire for your baby is equally as important as choosing the right sleeping bag. The key is to balance the tog rating of the sleeping bag with the room temperature and the baby’s clothing. For example, a 3.5 tog sleeping bag is suitable for rooms under 14 degrees Celsius, while a 1.5 tog bag works well for rooms between 22 to 25 degrees Celsius.

Remember, according to out Baby Sleeping Bag Guide babies under 12 months are more vulnerable to overheating. Thus, when they are unwell, they should wear fewer layers. Also, sleeping bags should not be used with additional bedding like blankets as this can lead to overheating.

For Warm Weather

Ensuring comfortable sleep for your baby during warm months or warm room temperatures can pose a challenge. But with the right sleeping bag and clothing, you can ensure your baby’s comfort. A baby sleeping bag with a lower tog rating, such as 0.5 or even as low as 0.2 for extremely hot weather, is recommended.

For nurseries with a temperature between 74-78°F (23-26°C), it’s suitable to use a 0.5 TOG sleep sack. In such cases, the baby can be comfortably dressed in a short-sleeve onesie or even just a diaper.

For Cooler Climates

In colder climates, it’s essential to maintain your little one’s warmth without the risk of overheating. For such conditions, a tog rating of 3.5 is recommended for baby sleeping bags.

Dressing your baby in a one-piece footed sleeper and possibly an additional onesie underneath for extra warmth is advisable when using a 2.5 TOG sleeping bag. Also, remember to set the nighttime room heating to a low temperature, ideally no higher than 20°C, for comfortable sleep with the right baby wear.

Selecting the Right Size and Fit

Selecting a baby sleeping bag of the correct size and fit is imperative for safety and comfort. The neck hole should be appropriately sized to prevent the baby’s head from slipping through when fastened.

Moreover, baby sleeping bags should be selected based on the child’s current weight and age to minimize safety risks and discomfort associated with a bag that is too large. And, to accommodate growth, opt for a sleeping bag that allows the baby’s feet to reach about 3/4 of its length.

Transitioning Through Different Stages

Newborn swaddle sleeping bag

With your baby’s growth, their sleeping bag requirements will evolve. Many sleeping bags are designed with features like shoulder straps with open and close fastenings and poppers under the armpits for snugness, adapting to a growing baby’s size while remaining safe. As your baby grows, their baby’s arms will also need more room to move comfortably in the sleeping bag.

Convertible sleep suit bags with legs and grip pads accommodate toddlers who transition from sleeping in a cot to using a duvet in a toddler bed, providing both mobility and familiarity. A well-fitted sleeping bag can serve as a consistent cue for bedtime routines, potentially enhancing sleep quality as the infant ages.

Newborn Options

Newborns possess distinct sleep requirements. The Moro reflex, or startle reflex, is a natural reaction in newborns which can sometimes cause them to wake up while sleeping.

Swaddle baby sleeping bags closely mimic the containment of the womb and can suppress the Moro reflex, promoting a more restful sleep. These designs help to calm babies, providing them with a sense of security that facilitates better sleep when the baby sleeps.

Toddler-Friendly Designs

As your baby transitions into an active toddler, their sleeping bag should offer additional space and flexibility to accommodate active sleep patterns and daytime nap mobility.

Products like the Purflo Baby Sleep Bag and the ErgoPouch Sleep Suit Bag are designed for the active lifestyle of families and toddlers respectively, offering travel-friendly slots compatible with most car or buggy harnesses, and transforming from a sleeping bag to a sleep suit with legs.

Baby Sleeping Bag Guide: Maintaining a Constant Temperature in Baby’s Room

Maintaining safe room temperature for baby

Keeping a steady temperature in your baby’s room is central to their safety and comfort. The Lullaby Trust suggests that a room temperature of 16-20°C is ideal for babies to sleep comfortably and safely.

Using a room sensor or a video baby monitor with a temperature feature can help you track the temperature in the baby’s room reliably. And remember, room-sharing with a baby for at least the first six months facilitates easier temperature control and overall safer sleep.

Safe Sleep Practices Beyond the Bag

Beyond the right sleeping bag choice, other factors can help your baby sleep safely. Our Baby Sleeping Bag Guide mentions for instance, avoid covering a baby’s face or head during sleep to prevent the risk of overheating.

Also, be watchful for signs of discomfort due to incorrect room temperature. If a baby’s ears or the back of the neck are warm and sweaty, or if they appear pale and have cold hands and feet, they may be too hot or too cold, respectively.

Review of Popular Baby Sleeping Bags

To assist you in making an informed purchase, we’ll examine a few popular baby sleeping bags available in the market. The following baby sleeping bags all have a 2.5 tog rating, making them suitable for all-year comfort:

  • Love to Dream Swaddle
  • Tommee Tippee Baby Sleep Bag
  • Snuz Sleeping Bag
  • The Little Green Sheep Organic Baby Sleeping Bag

Moreover, the Snuggle Baby Sleep Bag and the 1.5 tog HALO Swaddle Sleeping Bag offer flexibility for different seasonal needs. And, Merino wool sleeping bags and those made from organic linen and cotton blends provide excellent temperature regulation, making them ideal for use throughout the year.

SnuzPouch and Its Unique Features

Among baby sleeping bags, the SnuzPouch Sleeping Bag (Cloud Nine) is particularly noteworthy. With a tog rating of 1.0, it’s suitable for different room temperatures.

What sets the SnuzPouch apart is its unique design feature that allows for easy nappy changes. This thoughtful detail adds an extra layer of convenience for parents.

The Versatility of Multi-Tog Bags

Multi-tog baby sleeping bag

Multi-tog baby sleeping bags with detachable sleeves offer adjustable levels of warmth and can be adapted to suit different temperatures, making them an excellent choice for year-round use.

Products like the Babasac Multi-tog Baby Sleeping Bag, the Vertbaudet 4-Season Sleep Bag, and the Moses Basket exemplify the versatility of multi-tog bags, allowing for easy adaptation to the changing needs of a baby throughout the year.

Baby Sleeping Bag Guide: Care and Maintenance of Baby Sleeping Bags

Correct care and maintenance are essential to ensure your baby’s sleeping bag remains effective and lasts longer. Always wash the bag prior to initial use. When washing, ensure the zip fastening is closed to protect the baby’s skin and keep the bag intact.

Different materials require different care. For instance, merino wool sleeping bags require less frequent washing. Here are some care instructions for merino wool sleeping bags:

  • Airing them out inside-out can maintain their freshness.
  • They should be laundered with wool wash liquid only.
  • Use a cold machine wash on a wool/delicate cycle.


In conclusion, choosing the right baby sleeping bag involves considering several factors, including tog ratings, materials, design, and size. Moreover, understanding how to dress your baby for different temperatures and stages of growth is crucial. Remember, safe sleep practices go beyond just the sleeping bag; maintaining a constant temperature in the baby’s room and observing other safe sleep practices is equally important. Above all, your child’s comfort and safety are paramount.

Frequently Asked Questions

What should baby wear under 2.5 tog sleeping bag?

At temperatures between 14°C and 16°C, it’s best to dress your baby in a baby grow with a long sleeve vest underneath, if using a 2.5 tog sleeping bag.

When should a baby start using a sleeping bag?

You can start using a baby sleeping bag from birth to 36 months to help maintain a consistent and comfortable temperature for your little one during the night.

When can I put my baby in a 1.5 tog sleeping bag?

You can put your baby in a 1.5 tog sleeping bag when the room temperature is between 22 to 25 degrees Celsius, in which case you should also dress them in a cotton bodysuit.

How do I know what size sleeping bag for my baby?

You can determine the right size sleeping bag for your baby by considering their age. A 70 cm sleeping bag is suitable for babies up to 6 months, while a 90 cm sleeping bag is suitable for babies up to 18 months, and a 110 cm sleeping bag is suitable for babies up to 48 months.

What should baby wear to bed?

Experts recommend dressing a baby in a lightweight onesie and a sleep sack to help them feel secure and cozy without overheating. Additionally, using wearable blankets or sleep sacks is considered safe and effective.

Where do I find more tips and recommendations for my baby’s sleep?

Read our article about baby sleep routines and how to get restful nights.

Have a look at our article helping to master sleep patterns of babys. What can one expect.

See how the sleep of a baby changes at 7 month.

Check how the sleep of a baby changes at 15 month.

See how the sleep of a baby changes at 18 month.

What nursery cams are worth looking into?

See Best Baby Monitors here.

Comprehensive review of the Cubo AI here.

In-depth review of the Nanit Pro here.

Read the review of the Motorola VM 483 here.

Have a look at the VTech 3254 review here.

Explore the Owlet Baby Monitor Duo 2 with our review here.