How we test products
Our mission is to take the guesswork out of finding the perfect sleep products.
We've dedicated hundreds of hours to testing mattresses and sleep accessories, and rely on a team of testers of differing weights, temperature preferences, and sleeping positions to evaluate each product.
Tested products are granted the Sleep Hero tested stamp of approval, a mark of our review's reliability.
If we haven't personally tested a product, please be assured that we invest significant time and energy into scouring the UK market and researching the best recommendations, and we work with a team of sleep experts who review our articles, ensuring that the insights we provide are not only relatable but also reliable.
Why buy a duvet?
A duvet is an essential part of any bed setup, creating that perfect cocoon feeling that makes it difficult to get out of bed in the morning - in a good way! 🤗
Duvets generally consist of a soft outer shell, often made of cotton, and an inner filling of down, feather, bamboo, or synthetic materials.
In contrast to blankets, which are often thin & heavy, duvets are light and fluffy.
They allow you to move more freely. 💃
They're also warm and comfortable, keeping you snug at the ideal temperature, whether it's summer or winter.
Having a good duvet virtually guarantees you'll get a good night's sleep at the right temperature. 😴
Choosing the right duvet will depend on ambient room temperature and the duvet's weight, materials, and size.
Steps to choosing the right duvet:
Let's look at some of those factors in more detail. 👇
Understanding tog ratings
A tog is a measure of thermal insurance of a unit area. 🌡
It is commonly used in the textile industry to give the warmth levels of duvets.
Tog rating refers to the warmth or thermal resistance of a duvet.
It measures the ability of a duvet (without a cover) to trap air.
The higher the tog, the more air it can trap, and the warmer the duvet will be.
In the UK, the tog scale runs from 1 to 15:
- The higher the tog number, the warmer the duvet will be.
- The lower the tog number, the cooler the duvet will be.
But how do you know which tog rating is right for you?
Choosing the right tog rating
Unless you're sleeping in a fully temperature-controlled room, your bedroom temperature will undoubtedly be influenced by the seasons.
- If your room is cooler (below 18°C), you'll need to opt for a warmer duvet.
- If your room is warmer (above 22°C), you should be okay with a lighter duvet.
But, you also need to consider your personal preferences.
If you easily feel cold at night, you'll fare better with a warmer duvet. ❄️
In contrast, if you sweat easily or sleep quite warm, a lighter duvet should be fine.
What's the best tog duvet?
There's no such thing as the best tog duvet, as the type of tog that best fits will depend according to how hot you run, where you live, and the season.
But, you can buy duvets that are meant to change with your body - i.e. keep you warmer if you're cold and keep you cooler if you're hot.
The Simba Hybrid is one such option and is one of the best all-season duvets you can find.
Choose according to the season
You'd generally select different tog ratings according to the season.
- For the summer months, duvets with a tog rating of under 5 are common. We'd recommend a 3 - 4.5 tog rating for summer, warmer homes, or people who quickly feel hot at night.
- For spring and autumn, duvets with a tog rating of 7 - 10.5 are comfortable.
- For the winter months, duvets with a tog rating of between 12 and 15 will keep you warm and toasty. Choose 13.5 or higher if your house gets very cold or if you quickly feel cold. If you're a hot sleeper, though, you may be more comfortable with a 10.5 tog duvet.
Most duvets come in a range of togs, so you can choose the one best for you.
With the rise of central heating, many people have also begun opting for all-season duvets. 🍁
There are two main types of all-season duvets:
- Some brands offer mid-range togs that will work for both summer and winter.
- Other brands offer two separate duvets (one with a lower tog and one with a higher tog) with poppers or buttons. This allows you to put the two together to keep you warm on those cold winter nights.
If you don't want to purchase a range of duvets, an all-season duvet is a convenient solution for year-round comfort.
The Simba Hybrid duvet is one of the best all-seasons duvets with unique temperature-regulation technology.
What's the best winter duvet?
The best winter duvet will be a mid- or heavier-tog option that's generally quite airtight but also fluffy and mouldable.
Our favourite option is The Fine Bedding Company Boutique Silk duvet in 13.5 tog option.
What's the best summer duvet?
The best summer duvet will be a lighter- or mid-range tog option that's very breathable.
The Panda Cloud duvet, while generally considered an all-seasons duvet, is actually one of the best summer duvets we've tried.
It's light and breathable, but still very fluffy and manages to keep you warm without the risk of overheating.
What's the best duvet for hot sleepers?
Generally, the best duvet for hot sleepers will be similar to what you'd need as the best summer duvet - something that's light, fluffy, and breathable.
It's also worth paying attention to extra-breathable materials, like bamboo or silk.
The Boutique Silk duvet is a great option for hot sleepers.
Consider other influences
Some other factors could also influence your choice of duvet.
For example, if you're sharing your bed with a partner, it's often better to opt for a lower tog rating as the second person will add warmth. 👩❤️👨
Similarly, your duvet cover can have an effect.
Tog ratings refer to the naked duvet, but your duvet cover can make it feel much warmer. 🔥
The largest additional factor to consider, though, is your mattress.
The best mattresses will keep you at a comfortable temperature, but mattress material does matter.
As memory foam retains more heat than other types of foam, you're likely to sleep much warmer overall. 🥵
If you quickly feel warm at night, it would make sense to use a duvet with a lower tog rating if you're sleeping on a memory foam mattress or a memory foam mattress topper.
This will prevent overheating.
What about tog ratings for children?
Most children will be comfortable with a lighter-weight duvet of about 4.5 togs.
This should be warm enough - unless your child's bedroom is very cold.
As children are smaller, duvets automatically trap more air and feel warmer overall.
As a general guideline:
- Children above the age of 6 can comfortably use adult duvets with lower tog ratings.
- Children sleeping in cots should use smaller duvets specifically designed for cot beds.
Children under the age of 1 should not be sleeping with a duvet.
Our favourite cot bed duvet:
How to choose the size of your duvet
The perfect duvet should look great on your bed.
Choosing the right size duvet is quite easy - it should match the size of your bed.
Standard duvet sizes are slightly larger than their corresponding mattress sizes. 🇬🇧
The standard UK duvet sizes are:
- Cot bed duvets: 120 x 150 cm (3'9" x 3'9")
- Single duvets: 135 x 200 cm (4'4" x 6'6")
- Double duvets: 200 x 200 cm (6’6” x 6’6”)
- King duvets: 230 x 220 cm (7'5" x 7'2")
- Super-king duvets: 260 x 220 cm (8'5" x 7'2")
- Emperor duvets: 290 x 235 cm (9'5" x 7'7")
But, there are certain instances where you might choose to purchase a larger duvet.
For example, if you're sharing your bed with a duvet-hogging partner, you may want a larger duvet for a more comfortable (and warmer) sleep.
Though, if you still find yourself fighting for the covers, it may be worth investing in individual duvets.
You may also wish to purchase a larger duvet if you easily feel cold at night. 🥶
This will ensure that the duvet wraps around the mattress, which keeps out any excess air.
Conveniently, larger duvets also look quite chic as they drape over the edge of the bed.
What is the best type of duvet to buy?
There are many factors to consider when choosing a new duvet.
You need to think about tog ratings, duvet weights, materials, and sizes.
The perfect duvet will enhance your sleeping comfort. 😴
You'll do well with any of the recommended ones, but our favourite budget-friendly option is the Panda Cloud Duvet.