What is a TOG?
TOG stands for Thermal Overall Grade, and in more technical terms is used to measure the thermal resistance of a unit area (also known as thermal insulance). It is commonly used in the textile industry and was developed in the UK to explain warmth levels of duvets (doonas).
It is interesting to note, that in the UK, a Summer duvet is rated as between 3.0 - 4.5 TOG, while a duvet used for Spring/Fall is rated between 7.5 - 10.5 TOG, and a Winter duvet is rated between 12.0 - 13.5 TOG (wow, that's pretty high right).
So think about these numbers in the context of duvets used by adults or older children. Granted it is assumed that there are no other factors being considered, like room temperature or clothing used in bed.
For Babies however, please note: There are a number of other factors that should be considered when determining what TOG rating sleeping bag you should use for your baby. These include the clothing your baby is wearing, the room temperature of your baby's room, your baby’s health and other bedding/blankets you will be using.
Check our guide to keeping your baby sleeping just right during the cold chilly winter.
And always check your baby regularly to ensure they do not overheat.
All our sleep sacks and sleep suits are TOG tested by by Bureau Veritas UK and have passed British Standard 8510: 2009 Clause 7 (Thermal Resistance) and we choose to use only natural fibres like cotton as this helps with thermal regulation by offering breathability and prevents sweating, which can cause fluctuations in temperature in the night.
Our sleep sacks are tested by Bureau Veritas UK and have passed British Standard 8510: 2009 Clause 7 (Thermal Resistance) and are TOG rated a follows:
Figuring out which TOG rating to use
To figure out which TOG rating sleeping bag is right for your baby, you first need to determine the temperature of your baby’s room.
Many sleep experts recommend a room temperature between 68Fº - 72Fº is best for a baby's nursery.
Once you know your baby's room temperature, you can use the chart below to work out which TOG rating sleep bag and sleep clothing is appropriate for your baby. There are few things to keep in mind:
How to dress your baby with a TOG rated sleep sack
It's important to use the TOG rating and suggested clothing only as a general guide.
Just like adults feel the temperature differently, your baby will too. For example, you might be fine with a sweater in 60°F degrees weather whereas someone else might be bundled up in a jacket on top of a sweater.
Your baby is your best gauge
Always check your baby regularly to ensure they do not overheat or are too cold.
Watch how your baby reacts to different TOG ratings to ensure your baby is warm or cool enough for sleeping. Here are some things to watch out for when dressing your baby for sleep: