How to Dress Your Child for Sleep in a 21 Degree Room
A room temperature of 21 degrees is one of the most common night-time temperatures in our homes. It is not too warm, but not cold either, which is probably why it can feel tricky to decide what your baby should wear, especially when they cannot yet tell you whether they are too warm or too chilly. That is why it is so important to choose the right pieces, and to check your baby’s body from time to time for signs of comfort or discomfort.
It is simple to manage and quickly becomes part of your routine. We will help you with exactly that in this article. At the end, we will also show you how to create a truly stylish outfit for your baby using LiaaBébé pieces.
LiaaBébé’s Sleepwear Recommendation for Babies at 21 Degrees
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long-sleeved baby bodysuit with a sleepsuit and a 1.5 TOG baby sleeping bag
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short-sleeved baby bodysuit with a sleepsuit and a 1.5 TOG baby sleeping bag
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short-sleeved or long-sleeved baby bodysuit with a 2.5 TOG baby sleeping bag
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for older children, pyjamas with a vest or T-shirt and a baby blanket
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newborns may often need one extra thin layer
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for premature babies, it is always worth taking medical advice into account
A sleeping bag is especially practical, because your baby cannot yet cover themselves properly, so they will not kick off the blanket during the night.
Dressing Your Child for Sleep Can Vary Depending on Their Age

You should always consider:
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your baby’s age
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how much they move
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how developed their temperature regulation is
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and their individual warmth needs
In the first few weeks, babies’ temperature regulation is still immature. This means they can cool down more easily, but they can also overheat, which is why thoughtful layering is especially important.
Your baby’s neck and back can tell you a lot. Check them by touch:
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if they feel sweaty or damp, your baby is probably too warm
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if they feel cool or their skin looks mottled, they are probably chilly
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if they feel comfortably warm, the temperature is likely just right
Why Use a Sleeping Bag for Sleep?
One of the biggest advantages of a sleeping bag is that it helps provide a stable feeling of warmth throughout the night. It does not slip off like a blanket, it does not move in front of your baby’s face, and it keeps warmth more even, which may help reduce night-time waking.

A sleeping bag with feet is especially useful for more active children, as they can move comfortably in it while walking or playing. It gives them a sense of freedom if they already like going to the toilet by themselves or moving around the home.

The TOG Rating Matters When Choosing a Sleeping Bag
TOG is a thermal insulation rating that shows how warm a particular sleeping bag is. It is important to choose based on the actual room temperature, rather than the season.
The higher the TOG rating, the more warmth the sleeping bag or baby blanket will retain. For more detail, you can read further information about TOG ratings.
How to Measure the Room Temperature
Accurate measuring is important because different parts of the home can vary in temperature.
It is worth following these simple tips:
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always measure near the baby’s cot
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not next to a radiator or window
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ideally with the window closed
There can be a difference of 2 to 3 degrees within the same home, which can have a real impact on how you dress your baby for sleep.
At night, the air temperature can change depending on the heating system you use, whether a window has been left open, or whether the air conditioning is running. It is worth noticing larger drops in temperature and choosing a warmer sleeping bag for your child when needed.
Did You Know? Our Body Temperature Changes During the Night Too
Our body follows a natural rhythm. As we fall asleep, our body temperature drops slightly, then gradually rises towards the early morning. This is why it is completely normal if your baby’s body feels warmer in the morning.
The best way to balance changes in both the environment and the body is through suitable nightwear. That is why it matters how many layers you put on your child, how well those materials retain warmth, and whether they are able to breathe properly.
Why Is Bamboo Fabric a Good Choice?
Bamboo fibre baby clothes and sleeping bags have become favourites for many families because they:
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are breathable
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help balance temperature
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feel cooling in summer and warm in winter
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are gentle on sensitive baby skin
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are extra stretchy, making dressing easier
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are durable
LiaaBébé Baby Clothes Can Be Beautifully Combined
With baby bodysuits, sleepsuits, sleeping bags, pyjamas and trousers with feet, you can easily create sets that work beautifully together in colour and print. You can combine several shades of the same colour, such as blue pieces or yellow-orange tones. You will also find matching printed designs for each palette, including dinosaur dots, strawberries, giraffes and floral pieces.
For little girls, you can choose charming sleeveless ruffle bodysuits and dresses in a plain peach shade or with a white pattern.
It is not only baby clothes that are made in these colours and prints. Baby sleeping bags, sleeping bags with feet and baby blankets are available in the same designs too. You can also find your favourite shades and patterns on short-sleeved and long-sleeved pyjamas, as well as baby trousers with feet.

FAQ About LiaaBébé Baby Clothes

What sizes are the sleeping bags, baby bodysuits and sleepsuits available in?
You can choose from baby sleeping bags and sleeping bags with feet. For babies, our sizes range from 56 to 80, while for toddlers, our sleeping bags with feet are available from 74 to 110. Short-sleeved and long-sleeved baby bodysuits and sleepsuits are available in sizes 56 to 98.
Why are baby blankets comfortable?
Because, much like our sleeping bags, they come with 0.5 and 1.5 TOG ratings and are made from beautifully soft bamboo viscose.
What are the benefits of baby trousers with feet?
They are designed for the smallest babies, in sizes 56 to 68. They have a very comfortable higher, fold-over waistband and built-in feet, helping to keep your baby warm.
A temperature of 21 degrees can also occur outdoors during a pleasant spring or autumn walk, or on a summer evening. At times like this, many babies fall asleep in the pram, as fresh air and gentle rocking can be very soothing. However, the same feeling of warmth can change much more quickly outside than indoors, so it is worth paying extra attention. A little shade, a sudden breeze or the air after sunset can quickly start to feel cooler.
That is why it is helpful to have an extra layer with you, which you can quickly put on your baby or lay over them if needed. A thin baby blanket or light cardigan can help prevent your little one from getting chilly while sleeping. If your baby sleeps in the pram for a longer time, it is especially important to check their neck and back from time to time. This makes it easy to tell whether they are comfortable or need a little extra warmth. With a little care, resting outdoors at 21 degrees can feel just as safe and peaceful as sleeping at home.
Written by Mónika Veres
Sources:
NHS — Baby safer sleep advice
The Lullaby Trust — Your baby’s room temperature