Don't buy it if: you're on a tight budget as this luxury duvet has a luxury price tag. If you're a hot sleeper or suffer from night sweats then you might find down too warm; opt for a more breathable wool-filled duvet instead to avoid overheating. And, if you're vegan, then the feather and down fill won't be for you. That said, personally, we think 13.5 tog remains one of the best winter duvet weights, with some finding 15 tog can retain heat a little too much during the night and lead to overheating.

Read more in our guide to what tog duvet to buy as well as finding out when is the right time to switch to a summer duvet. What size duvet do I need? Emily Attwood, founder of sleep-brand scooms agrees, ''We’d always advise a 9 tog to 13.5 tog for the winter months as this is ideal and will keep you warm. If your house is always on the warmer side, then a 9 tog duvet would probably suit you better throughout the winter months, and you wouldn’t want to go any higher. This will prevent you from overheating which can disrupt your sleep.' If you're a hot sleeper or suffer from night sweats then you might also find this high down-mix fill too warm; opt for a more breathable wool-filled duvet like Floks Luxury British All Seasons Wool Duvetinstead to avoid overheating. Buy it if: you're looking for the very best duvet for a great night's sleep. This wool-filled duvet is an investment, but we've tried and tested some of the best winter duvets on the market, and in our opinion, this is the cream of the crop. It's the warmest we've come across, keeping our testers warm and toasty throughout the night without any of the overheating or night sweats that occurred with other high tog options. That's thanks to the naturally thermoregulating properties of wool that allow moisture to escape whilst still providing insulation. Handmade in Yorkshire using 100% traceable British Cheviot wool and certified organic cotton this is also a great eco-friendly option, with wool completely biodegradable.

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Don't buy it if: the price makes your eyes water. As well as being the softest duvet fill, down is also the most expensive fill, and 90% Hungarian goose-down is pretty much the best quality you can get. If you're a hot sleeper or suffer from night sweats then you might find down too warm; opt for a more breathable wool-filled duvet instead to avoid overheating. And, if you're vegan, then the feather and down fill won't be for you. An all-season duvet is made up of two separate duvets of differing togs – one lightweight and one midweight – that can be attached together into one single heavyweight duvet or used separately. The idea being that you can mix and match to ensure you have the perfect weight duvet for spring, summer, autumn, and winter.

Then there are the more traditional, natural fillingsto consider. These range from all types of feathers and down to wool filling.

Sleep Solutions

Don't buy it if: you really want to layer on the warmth. This 13.5 tog duvet is plenty snuggly enough, but we think the wool and down options just pip it to the post in terms of cosiness. That said, this synthetic option is far easier to care for as it's machine washable and can be tumble dried on a low heat setting. Don't buy it if: you truly want to splash out on the best duvet for your boudoir. This option is very good for its price, but the higher feather mix does mean it feels more 'clumpy' than the 90% down alternatives on our list. That said, this is still a great buy, and the addition of feathers does make the duvet a little more breathable than a duvet with a higher down percentage, albeit not quite as warm. After much testing, we think 13.5 tog is best tog duvet for winter, with most of our testers finding 15 tog can retain heat a little too much during the night and lead to overheating.