Best winter duvets
The 13.5 tog winter duvet is a habit from poorly insulated houses, and most modern British bedrooms never get cold enough to need one.
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Tog measures thermal resistance: how well a duvet stops heat leaving you. It says nothing about weight, breathability or how a duvet feels.
The 13.5 tog winter duvet became standard when British homes were draughtier, single glazed and unheated overnight. Better insulation and modern heating changed the bedroom, and the duvet convention did not follow.
Seven to 10.5 tog covers most modern UK bedrooms year round. If you wake up hot in January, the duvet is the more likely cause than the mattress, and it costs a fraction as much to change.
The exception is real: a genuinely cold room with heating off overnight does need more. This page covers both.
The picks
The pick, if you want one answer
Simba Hybrid 3-in-1 Duvet, 7.8 / 10. Two duvets that pop together, so winter warmth is available without owning a single heavy duvet you cannot wash.
| Product | Best for | From | Score |
|---|---|---|---|
| Simba Hybrid 3-in-1 Duvet | Best winter solution overall | Mid range | 7.8 / 10 |
| Scooms | Best quality down | Premium | 8.0 / 10 |
| Panda Cloud Bamboo Duvet | Best for hot sleepers who still feel cold | Mid range | 7.4 / 10 |
| Simba Duvet | Best conventional option | Mid range | 7.4 / 10 |
Simba Hybrid 3-in-1 Duvet: Best winter solution overall
Mid range · 7.8 / 10
Scores 7.8. Two duvets that pop together for the coldest weeks and separate for everything else. The practical advantage nobody mentions: each half fits in a domestic washing machine, where a single 13.5 tog duvet frequently does not.
Buy it if
You want proper winter warmth and something lighter for the rest of the year.
Do not buy it if
You want the simplest possible bedding.
Read the full Simba Hybrid 3-in-1 Duvet review
Scooms: Best quality down
Premium · 8.0 / 10
The highest scoring duvet on this site at 8.0. High fill power down gives the same warmth for less weight, and weight is what makes a winter duvet feel oppressive. That is what you are paying for, not the tog.
Buy it if
You want warmth with as little weight on you as possible.
Do not buy it if
Anyone in the house has a down allergy, or you need 60 degree washing.
Panda Cloud Bamboo Duvet: Best for hot sleepers who still feel cold
Mid range · 7.4 / 10
Scores 7.4. Moisture management matters more in winter than people expect: a warm duvet that traps humidity produces the clammy overheating that gets people throwing the covers off at 3am and then waking cold.
Buy it if
You want winter warmth without waking up damp.
Do not buy it if
You want maximum loft.
Read the full Panda Cloud Bamboo Duvet review
Simba Duvet: Best conventional option
Mid range · 7.4 / 10
Scores 7.4. A sound synthetic duvet. Synthetic is heavier than down for the same warmth and tolerates hot washing, which matters if anyone in the house has a dust mite allergy, because mites survive a 40 degree wash.
Buy it if
You want a straightforward single-season winter duvet.
Do not buy it if
You would rather cover the whole year with one purchase.
Read the full Simba Duvet review
What tog you actually need in winter
| Bedroom overnight | Winter tog |
|---|---|
| Heated overnight, well insulated | 4 to 7 |
| Typical modern UK home, heating off at night | 7 to 10.5 |
| Older property, draughty, single glazed | 10.5 to 13.5 |
| Unheated room, solid walls, cold snap | 13.5, plus a blanket rather than a higher tog |
The last row is worth reading carefully. Adding a layer beats buying a higher tog, because a blanket can be removed when the weather turns and a 15 tog duvet cannot. A wool blanket over a 10.5 tog duvet covers a far wider range than a single heavy duvet does.
Fill power and fill weight, which matter more than tog
Two duvets at the same tog can feel completely different, and these two numbers explain why.
Fill power measures the loft of down: how much space a given weight occupies. Higher fill power traps more air per gram, so the same warmth arrives with less weight on you. This is what an expensive down duvet is selling.
Fill weight is simply how many grams are in it. A 13.5 tog synthetic duvet and a 13.5 tog high fill power down duvet reach the same thermal resistance with very different weights, and the heavy one feels considerably more oppressive.
Synthetic is not worse, it is different: heavier for the same warmth, washable at high temperature, and far cheaper. In an allergy household, washable at 60 degrees beats every other property.
If you wake up hot in winter
This is more common than people expect, and the causes are cheap to fix.
Drop a tog step before anything else. Thirteen and a half to 10.5, or 10.5 to 7.
Change the duvet cover. A polyester cover insulates and holds moisture against your skin, and clamminess is what most people actually experience as sleeping hot. Cotton percale or lyocell costs a fraction of a duvet.
Check the mattress protector. A cheap plastic-backed protector stops air as well as liquid, which makes the whole bed warmer and is the most common reason a hybrid mattress sleeps hot.
All three together cost under a hundred pounds and are more likely to be the cause than the mattress.
If one of you is cold and the other is not
Tog is per duvet, not per person. Any shared number is wrong for one of you every night.
Two single duvets, one each, is standard across Scandinavia and solves three things at once: each person gets the warmth they want, duvet stealing becomes structurally impossible, and one person's movement stops dragging the covers off the other.
It costs about the same as one good duvet.
What not to buy
A 13.5 tog duvet by default. The commonest cause of waking up hot in a modern British bedroom.
Anything above 13.5 tog. Add a removable blanket instead.
A duvet that will not fit your washing machine. It will not get washed.
A high tog duvet under a polyester cover. You have added insulation to insulation.
A single compromise tog for two people who disagree. Two duvets cost less and work better.
Also considered, and why they are not here
A roundup is only as useful as what it leaves out, so here is what was assessed and rejected for this list.
| Product | Why it is not on the list |
|---|---|
| Emma Cloud Duvet | Scores 6.9. Comfortable and priced above what the specification justifies against the alternatives here. |
| Night Lark Coverless | Scores 7.6 and is excellent for washability. Coverless duvets cluster in the lower and middle tog range, so options thin out for genuine winter warmth. |
| Simba Weighted Blanket | Not a duvet, and worth naming: a weighted blanket adds a dense insulating layer, so most people need to drop a duvet tog step when they start using one. |
How this list is made, and who made it
Independence
No brand pays to appear on this site and no placement is sold. Some links earn a commission if you buy, which never changes a score, an order or a verdict. Several of the lowest scores here are on products that carry commission, and several recommendations carry none.
Who writes this. Kyle Klinkradt has worked in the mattress and bedding industry for over ten years across retail, distribution and brand partnerships, and has handled, sold or assessed products from every major UK bed-in-a-box brand. Every review on this site is written by one person, so the scores mean the same thing from page to page.
What the assessment is. Construction specifications against what they physically do: spring height and where in the mattress it sits, spring count for the size, gauge, whether the base is sprung or foam, foam density where it is published, comfort layer depth and material. Then the commercial terms that decide what you are actually buying: trial against returns policy, guarantee length against the company's UK trading history at Companies House, and the regulatory record.
What it is not. This is not a laboratory. I do not publish pressure-mapping data or claim to have slept eight years on every mattress here, because nobody has and pages that imply otherwise are not telling you the truth. Where a judgement rests on construction rather than long-term use, the review says so.
What gets a product removed. Leaving the UK market, a specification change that makes the review inaccurate, or a corrected fact. Brands that have withdrawn are kept on the site with the score removed rather than quietly deleted, because people still search for them.
See editorial independence, corrections and the author page.
How these were chosen
Every product here has its own review on this site with a score out of 10, and the score is a judgement rather than an average. Nothing appears in a list because it pays more.
A score is against the market, not against its own range. The cheapest mattress in a lineup is usually priced to make the model above it look reasonable, and the flagship of a budget range has risen into a bracket where better brands compete. Both are judged against what else you could buy for the money.
Everything listed can actually be bought in the UK. That is not a given: Casper withdrew in July 2020 and Leesa no longer sells here, and both still appear in current British roundups with affiliate links attached.
I do not pad the list. Where only three or four products genuinely qualify, there are three or four. A list of seven when the category contains four good ones is a list with three bad recommendations in it.
Prices move constantly. Judge the cash price on the day rather than any percentage beside it. See every review on this site or where the real savings are.
Questions people ask
What tog duvet do I need for winter in the UK?
Seven to 10.5 tog in a typical modern home, and 10.5 to 13.5 in an older draughty property. The 13.5 convention comes from single glazed, unheated housing, and better insulated homes rarely get cold enough to need it.
Should I buy a duvet above 13.5 tog?
No. Add a removable blanket over a 10.5 tog duvet instead, because a blanket can come off when the weather turns and a higher tog duvet cannot. That covers a far wider range.
Why do I wake up hot under a winter duvet?
Most often the tog is too high for a modern bedroom. After that, a polyester duvet cover, which insulates and holds moisture, and a cheap plastic-backed mattress protector, which stops air as well as liquid.
What is fill power and does it matter more than tog?
Fill power measures the loft of down, so higher fill power gives the same warmth for less weight. Two duvets at the same tog can feel completely different, and weight is what makes a winter duvet feel oppressive.