What is a Tog Rating for Baby Sleeping Bags?

Tog Rating and How to Dress Your Baby

The Tog is a measure of warmth or "Thermal Resistance" of a product; the higher the Tog rating, the warmer the baby sleeping bag. For example, a 0.5 Tog baby sleeping bag is a cool summer bag, whereas a 3.0 Tog baby sleeping bag is a warm winter weight bag.

Knowing a Tog rating of a baby sleeping bag is a good start in knowing how to dress your baby for sleep. However, bear in mind that even though two different branded baby sleeping bags may have the exact same Tog rating, it does not mean they will provide the exact same warmth. This is mainly because lab Tog testing results can only be given as an approximate average, and results can vary from lab to lab.

Additionally, other factors such as humidity in your region, whether there is heating in the house, your baby's preference (whether your baby is a hot or a cold sleeper), and your baby's health (whether your baby has a cold or infection or another special need) can determine which tog sleeping bag to use and how you should dress your baby underneath.

Most brands provide a dressing guide with their baby sleeping bag, but they are just guides and should be used as your starting point only. Every baby is different, and it may take a bit of trial and error before you are able to work out exactly which tog baby sleeping bag to use and how you should dress your baby underneath.

We recommend that you dress your baby to be comfortable, neither too hot nor too cold. Feel your baby's chest regularly to check his/her temperature. Don’t worry if baby’s hands, face, and feet feel cool - this is normal. If your baby is sweating or has a red face, remove some clothing and/or use a lower tog baby sleeping bag. This may be necessary if your baby is unwell, in which case you should seek medical attention.

How Many Different Tog Baby Sleeping Bags Will My Baby Need?

Below we list the most common Tog ratings baby sleeping bags come in, and when they are used.

  • 0.2 Tog for Summer, Daytime Naps
  • 0.3 Tog for Summer, Daytime Naps
  • 0.5 Tog for Summer, Daytime Naps
  • 1.0 Tog Autumn/Spring in warmer climates, Daytime Naps
  • 2.5 Tog for Autumn/Spring in most climates, for Winter in warmer climates
  • 3.0 Tog for Winter
  • 3.5 Tog for Winter

For younger babies we do not recommend purchasing baby sleeping bags rated higher than 3.0 or 3.5 tog due to higher risk of overheating in young babies. Thicker sleeping bags can gain or decrease in loft depending how they are cared for. For example, using a dryer can fluff up the quilting in sleeping bags - increasing its loft and therefore increasing its thermal resistance.

We also do not recommend dressing young babies in too many layers of clothing underneath their sleeping bag as each layer can trap additional heat.

Purchasing baby sleeping bags in every single Togs isn't necessary. For most places in Australia purchasing baby sleeping bags in 3-4 different Togs, one for every season should be sufficient. Alternatively, you may like to check out our 4 seasons in 1 baby sleeping bag - the 365 Sleep Bag 2.0 - the only baby sleeping bag that can be configured to all seasonal variations, changes in ambient temperatures, and grows with your baby, thanks to its unique design.

"Thank you Sleepy Company for such an amazing sleeping bag! Mereseini gets eczema very easily, including from some...

Posted by The Sleepy Company on Wednesday, 8 November 2017


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