Baby sleeping bag: What should one wear underneath?

A Sleeping Bag is not only an essential part of the baby's first equipment, but also one of the best choices to ensure your baby can sleep well and safely at night, because:

    • the temperature in the Sleeping Bag can be optimally regulated,
    • in combination with suitable Clothing Line, children neither have to sweat nor freeze in it.

However, many parents often do not know what to dress their child in in the baby Sleeping Bag: Should it be a pajama or is a long-sleeve bodysuit or even just a diaper enough? Or is it better to use several layers in a layering look? We show you how to dress your little one for sleep and what to pay attention to so that they can spend the night warm and cozy in their Sleeping Bag.

Restful sleep: Dressing children properly at night

Basically: The higher the room temperature, the cooler your little one can be dressed at night. The most important factors when it comes to the right Clothing Line in the Sleeping Bag are therefore

    • the room temperature in the bedroom and
    • the so-called TOG value, which indicates the thermal resistance of a sleeping bag.

As the ideal sleeping temperature for babies, experts recommend a temperature of 16–18 degrees Celsius in the sleeping environment.

How can you tell if the baby is cold while sleeping?

You have ensured the right room temperature and selected a Sleeping Bag with the correct TOG rating for the current season, but how can you tell if your child is warm enough or possibly overdressed when sleeping?

Important to know: Cold hands and feet are not reliable indicators in this case.

The perception of temperature and the optimal sleeping temperature vary from child to child and can differ greatly. Therefore, you should always feel your baby's body temperature at the neck to be absolutely sure:

  • If the neck is cold, your little one is probably too cool.
  • If the neck is pleasantly warm but not hot, the infant's body temperature seems to be properly regulated.
  • If the neck is sweaty, your child is probably too warm.

What should your child wear in the sleeping bag?

If you have now noticed that your baby is either cold or sweating, you can easily regulate the body temperature by adjusting the sleepwear in the sleeping bag to their needs.

Our temperature chart shows you how to dress your baby appropriately at night: On the left you will find information about the room temperature, on the right in the columns the respective TOG value of the sleeping bag. In the matrix, you can now easily read which clothing in the sleeping bag is appropriate:

An example:

  • Your baby wears a sleeping bag with a TOG value of 1.0 TOG in summer and the room temperature is 22–24° degrees – then a short-sleeved bodysuit under the sleeping bag is recommended.
  • If the room temperature changes to about 20–22° degrees, a long-sleeved bodysuit would be better for your little one.
  • Depending on the room temperature and TOG value, often long- or short-sleeved bodysuits and sometimes just a diaper are sufficient.

  • If you have the impression that your baby is still too cold despite the Clothing Line, be sure to avoid an additional blanket over the Sleeping Bag to prevent the risk of overheating. Instead, choose a warmer Sleeping Bag.

  • For the same reason, you should also avoid a hat, because if your newborn is too hot, the excess heat will be released through the head. Socks also do not belong to the appropriate sleepwear in the Sleeping Bag, as there is also a risk of overheating here.

  • If you have further questions about baby sleeping bags, you can find more tips in our sleeping bag guide.

  • In our Sterntaler® online shop, you will also find suitable non-toxic baby clothing made from skin-friendly cotton, so you can create the optimal sleeping environment for your little one.

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