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.
Are cooling duvets actually cooling?
Many brands advertise a duvet as 'cooling' if it has a lower tog rating or breathable material, like down or microfibre.
The premium brands also use innovative technology, like Stratos, to improve the temperature-regulating capabilities of the duvet.
We get into this further down.
However, for the most part, these duvets do not provide an instant cooling sensation like having a cold shower or putting an ice pack on your forehead.
Instead, they are designed to prevent overheating so you don't wake up dripping in sweat.
What is the best cooling duvet material?
The composition of your duvet can make a huge difference to its cooling properties.
Here are some of the most popular materials for the insert and cover of cooling duvets.
Some of the best cooling duvet covers are made from microfibre.
It's popular because of its super soft and smooth texture.
It is a synthetic fabric made from finely woven polyester fibres, which create a lightweight and breathable duvet cover.
Microfibre cool duvet covers are known for their excellent moisture-wicking properties, helping you keep cool and dry throughout the night.
Additionally, microfibre is generally easy to clean and maintain and has anti-allergy properties.
We recommend the Silentnight Cooler Summer Duvet if you want an anti-allergy or goose-down alternative duvet.
Hollow fibre makes one of the best cooling duvet inserts.
It is a synthetic filling material with great breathability and temperature regulation.
It consists of hollow polyester fibres that trap air, creating a lightweight, insulating layer.
Hollow fibre duvet fillings are known for maintaining a comfortable sleeping temperature by allowing excess heat to escape while retaining warmth when needed.
Hollow fibre duvets are often hypoallergenic and easy to care for, making them a practical choice for those with specific needs.
Cotton is a classic and widely beloved fabric for duvet covers.
Cotton allows air to circulate and prevents heat buildup so you can sleep in a cool sleep environment.
If you’re looking for a cotton cover to go over your duvet, make sure it is 100% cotton and not cotton sateen.
Sateen has a thicker weave and is better for the cooler months.
Cotton covers are highly absorbent, effectively wicking away moisture and providing a comfortable feel against the skin.
Moreover, cotton is a natural and hypoallergenic material, making it an excellent choice for individuals with sensitive skin or allergies.
Polyester is another commonly used synthetic filling material in cooling duvets.
It is known for its affordability, durability, and easy maintenance.
Polyester duvet fillings provide a lightweight, hypoallergenic option, allowing for adequate air circulation and effective temperature regulation.
While polyester may not offer the same level of breathability as natural materials, it is a budget-friendly choice that can still provide a comfortable sleep experience.
The Fogarty Extra Cool 1 Tog Duvet features a recycled polyester filling to keep you comfy all night long.
Feather or down duvet
Down and feather fillings are sourced from birds, typically ducks or geese. 🦆
They are highly regarded for their natural insulation properties and breathability.
Down and feather duvet fillings create a warm yet breathable layer that adapts to your body temperature, keeping you cosy without overheating.
However, it's important to note that some individuals may have allergies or sensitivities to these natural fillings, so consider this when selecting.
Which materials should hot sleepers stay away from?
As mentioned above, polyester is less breathable and may not perform as well as the other materials listed.
That said, polyester is still budget-friendly and lightweight, so it's worth testing if you can't afford the more expensive cooling duvets.
So, is there a duvet that keeps you cool?
Cooling duvets can be a major lifesaver if you’re going through menopause or struggling with the UK summer heat.
With cooling technology and breathable natural fabrics, these duvets are designed to regulate your temperature at night and help you get a better night's sleep.
If you're still struggling with being too hot at night, we recommend adding a cooling gel mattress pad and pillow.