The tog rating of a duvet measures the thermal insulation, which tells you how warm the duvet will be. The higher the tog rating, the warmer the duvet. You may want different tog duvets for each season to make sure you don’t overheat in the summer or get too chilly during the winter!
Read our in-depth guide to understand what tog duvet you should buy:
- What tog duvet should I buy?
- Duvet tog ratings for each season
- All seasons duvets
- Silk duvets
- What does tog stand for / mean?
- What tog duvet should a toddler or child have?
- What else do I need to think about when choosing a duvet?
What tog duvet should I buy?
There isn’t really a ‘best tog for a duvet’. Your duvet should be the right tog rating for the season. Your body temperature needs to decrease slightly before you can fall asleep. A comfortable 18°C/ 65F is the ideal temperature for your bedroom at night. As a higher tog rating equals a warmer duvet, a 4.5 tog duvet is ideal for the summer, a medium 9 tog duvet perfect for spring and autumn and 13.5 tog nice and cosy for the winter. See the scooms duvet
Having the right tog duvet is important because if you’re too hot or too cold in bed, you won’t get a good night’s sleep!
Duvet tog ratings for each season
|Summer||3 to 4.5 tog||Lightweight|
|Spring/Autumn||7 to 10.5 tog||Cosy in heated environment|
|Winter||12 to 13.5 tog||Very warm|
|All season||4.5 tog + 9 tog||Choose your warmth|
Some common tog rating questions:
What does 10.5 tog duvet mean? If a 9 tog duvet is the average tog rating for the Spring or Autumn, a 10.5 tog duvet would be the highest tog rating we would recommend for those seasons.
What tog rating for a winter duvet? The typical tog rating for a winter duvet would be 12 tog to 13.5 tog.
What is a summer tog duvet? 4.5 tog would be ideal for a summer duvet.
What’s the highest tog duvet? You can get duvet togs up to a rating of 18 tog. This will feel incredibly warm! Fine if you live in a tent in the Arctic!
All seasons duvets
An ‘All seasons duvet’ can be a great choice. Made up of two duvets, a 4.5 tog and a 9 tog, they can be easily fitted together to produce 13.5 tog, providing the right combination for any season.
The scooms All season duvet comes with easy to use snap fasteners, giving you perfect temperature regulation throughout the year.
As silk duvets can’t be measured by tog, they’re measured in grams of silk per square metre (gsm). As a guide, 250gsm filling is similar to a 2-4 tog rating, 400gsm is about a 7-9 tog rating, while 600gsm is equivalent to 10-13 tog.
What does tog stand for / mean?
Tog is a word, not an acronym, so it doesn’t actually stand for anything. The ‘tog’ is a measure of thermal resistance of a specific area (typically a square metre). The Tog rating scale was set up in the 1940s by the Shirley Institute in Manchester to provide an easy to follow scale showing a material’s thermal insulation. This ascending scale, starting at a cool 1.5 tog to a very toasty 15 tog, shows how good a duvet is at trapping air and therefore providing warmth.
What tog duvet should a toddler or child have?
As children have smaller bodies, a duvet will trap more air around their body and keep them warmer at a low tog rating.
Toddlers and children, particularly under the age of ten, should use a lightweight single size 4.5 tog Summer duvet throughout the year. If they feel chilly, then add a light blanket rather than swapping to a higher tog duvet.
Babies under 12 months are too young for duvets and pillows due to the risk of overheating and suffocation. If your child is younger than 12 months, you need to ensure that they sleep under a blanket or in a sleeping bag specifically designed for their age.
What else do I need to think about when choosing a duvet?
Tog rating is just one of the 4 things you need to consider when you choose a duvet. The 3 other important duvet elements are:
- The duvet filling - the material used to fill the duvet such as down or wool.
- Fill power & weight - fill power measures the volume taken up by the down or feather filling in a duvet and fill weight measures the weight of the filling.
- How the duvet is made - the construction of a duvet is also important to make sure the filling stays well distributed and doesn’t bunch up leaving part of you rather cold during the night!
- Nomite - anti-allergen standard for house dust mite allergy sufferers
- Oeko-Tex 100 - verifies tested against harmful toxins and chemicals.
- Downafresh - feather and down hygiene and cleanliness requirements to European standard EN 12935.
- Responsible Down Standard - ensuring down and feathers come from geese that have been treated well and never suffer from live-plucking; following the chain of custody from farm to product.
- Guaranteed Hungarian down and feather - single country source; by-product of the food industry.
See our expert guide on ‘How to choose a duvet’