Posted by Lee Marlow
The Sleep Sanctuary
In this article
A duvet cover is an empty fabric case for your duvet: the duvet keeps you warm, the cover is what you wash.
PureFlow Duvet Cover
Think of your bed as two pieces. Inside sits the duvet, the filled, warm layer many shops sell as a duvet insert. Around it goes the cover. It is the part you see and sleep against, and the part that comes off on wash day while the warm part stays clean.
If you once ordered a "duvet cover" from a photo of a tall, puffy bed and opened a flat, empty bag, you did nothing wrong. The photo shows a cover with a duvet inside it. The box holds the cover. Ours says so in plain words: sold alone, it is "One empty duvet cover. It has no filling inside."
- 2 piecesa duvet, and the cover it lives in
- 8 tiesinside our cover, at corners and mid edges
- Foot edgewhere our cover's zip hides
- 1 to 2 weekshow often to wash our cover
What goes inside a duvet cover?
A duvet goes inside, or a comforter you already own. Those are the only two things a cover is made for. The words get muddled because shops use them loosely, so here is each one in a line.
Four words you will see on the same photo
| Word | What it is | Goes in a cover? |
|---|---|---|
| Duvet cover | An empty fabric case that opens at one end | It is the case |
| Duvet | A filled, warm layer made to live inside a cover | Yes, that is its job |
| Duvet insert | Another shop name for a duvet | Yes |
| Comforter | A filled layer finished to use on its own, often printed or coloured | It can, if the sizes are close |
So a duvet cover and a duvet are not rivals. One is the clothes, the other is the warm body inside them. You need the duvet to be warm. You need the cover to keep the duvet clean.
All three of our duvets fit the same cover. The Cloud Heaven Duvet holds "3.5 kg of the airiest 100% Canadian down" at 800+ fill power. The PureFlow Air Duvet holds the same down, light as air. The Royal Goose Down Duvet is our rarest, most limited down, and our highest fill power at 900+. The PureFlow Duvet Cover is "cut to fit Heaven, Air and Royal duvets in your size".
Need the filling too? Our duvet inserts arrive with this cover in your size.
Is a duvet cover the same as a comforter?
No. A comforter is filled and sewn shut, made to go straight on the bed. A duvet cover is empty. You could not sleep warm under a cover alone in winter, and you would not unzip a comforter, because there is nothing to unzip.
Where it gets confusing: a comforter can go inside a duvet cover. Plenty of people do exactly that, to protect a comforter they love or to change its look. It works when the comforter's size is close to the cover's, so it fills the corners, and when you can tie or clip the corners so it stays put. One small catch: a pale cover over a dark, printed comforter can show the print through.
The UK habit of calling the filled layer a duvet, and the US habit of calling it a comforter or an insert, adds to the muddle. If you want the full comparison, read which is easier to live with.
What is the point of a duvet cover?
It lets you wash the part that touches you and keep the part that keeps you warm. That is the whole idea, and it is a good one.
- Washing is easy. A cover goes in your washing machine, and our care guide says to wash it "Every week or two" and the duvet only when it needs it.
- The warm part stays clean. The cover is the layer your skin, spills and crumbs meet, so the duvet inside needs washing far less often. Our care guide says to keep the duvet in its cover every day.
- The look changes in minutes. A new cover is a new bed, without buying a new duvet.
Who should skip a cover? If you never want a second piece to deal with, and your comforter fits a washing machine you have, a comforter on its own is a perfectly good bed. We wrote a whole page on that question: do you need a duvet cover for a comforter.
How does a duvet cover close and stay in place?
It closes along one end, with a zip, buttons or a tucked flap, and ties inside hold the duvet's corners so it cannot slide. The closure decides how quick changing it is. The ties decide whether you wake up with an empty corner.
Our pick is a zip along the foot, plus a tie at every corner at the very least. The foot is the end you finish at when you put the cover on, so the closing step happens where your hands already are. And corner ties are what stop the drift: without them the duvet slowly wanders to one end.
On the PureFlow Duvet Cover, "A concealed zipper runs along the foot edge" and "Eight internal ties, at the four corners and the midpoint of each edge, hold your duvet square inside so it stays in place." Our care guide puts the method in one line: "Knot each tie to its partner on the duvet." If your duvet already slides about inside its cover, our page on why your duvet moves inside the cover walks through the fixes.
How do you use a duvet cover?
You put a duvet inside, tie its corners, zip it shut and take the cover off to wash. The only tricky part is getting the duvet in: turn the cover inside out, tie the corners first, then roll and flip. Everyone has wrestled a cover at least once, and plenty of people rewatch a how to video every single wash day. This way takes the wrestle out of it.
- Turn the cover inside out. Lay it flat on the bed, opening at the foot.
- Lay the duvet on top and tie it in. Knot each corner tie first, then the ones along the edges.
- Roll from the head toward the foot. Roll both layers together, starting at the closed end, so you finish at the opening.
- Flip the opening over the roll. Turn the open end right side out around the roll, zip it closed, unroll toward the head and give it a shake.
Tying the corners before you roll is the step most people skip, and it is the one that makes everything after it work.
LeAnna Rose shows it clearly in under two minutes. Her cover opens at the head, so she rolls from the foot. The rule is the same either way round: start the roll at the closed end and finish at the opening. Her comments are full of people doing this alone, some with little strength to spare, and this is the way that works for them. For more detail, read our full guide to putting on a duvet cover.
How do you choose a duvet cover?
Measure the duvet you own and buy the cover to fit it, not the bed. Size names are not standard. Bedsure notes that a label can vary by ten inches from one maker to the next, so a "King" cover and a "King" duvet from two brands can disagree.
- Size it to the duvet. The same size as your duvet, or a cover up to two inches smaller, looks full. The check below does the sums, and our page on which insert fits a King cover goes deeper.
- Pick your closure. A zip at the foot is quickest. Buttons and flaps work, they just take longer.
- Look for ties. At least one in each corner. More along the edges keep a big duvet square.
- Choose the feel you want on your skin. This is the layer you touch all night, so it matters more than the colour. If a cover rustles when you turn over, why is my duvet noisy shows how to find the layer making the sound.
- Read the care label before you buy. You will wash it far more often than anything else on the bed.
When the cover and the duvet come from one maker, cut to the same size, the size name is enough. That is how ours work: the PureFlow Duvet Cover comes in Queen 245 × 250 cm (96 × 98 in), King 285 × 250 cm (112 × 98 in) and Cal King 275 × 265 cm (108 × 104 in), the same listed sizes as our duvets in our duvet size guide.
The fabric is "PureFlow, our custom 300T cotton blend: soft, breathable and cool to the touch", and it "gets softer with every wash".
Who should buy a different cover? If you love a crisp, ironed hotel finish, ours is not that: "Relaxed creases are part of the look, so skip the iron." And if your duvet is another brand's size, check it in the tool first. Our cover is cut for our duvets. If you are still choosing the duvet itself, start with choosing a duvet size for your bed.
Free tool
Will your duvet fit the cover?
Full
Duvet 112 × 98 in, cover 112 × 98 in: the same width and the same length.
Edge to edge, so the cover looks full and smooth. Tie every corner and it stays that way.
PureFlow Duvet Cover, King: $239 USD (price on 13 Nov 2026), free with each YumeFeel duvet for a limited time.
Width and length are checked apart. A guide from Bedsure and The Company Store.
- Full. Duvet up to 2 in (5 cm) bigger or 1 in (2.5 cm) smaller.
- Baggy. More than 1 in (2.5 cm) smaller: Queen duvet, King cover.
- Tight. More than 2 in (5 cm) bigger: King duvet, Queen cover.
- Mixed. Bigger one way, smaller the other.
Questions people ask
Can you use a duvet cover by itself?
You can, on a hot night, but there is no warmth in it. It is two thin layers of fabric with nothing between them, which Parachute compares to sleeping under two top sheets. Sold alone, ours is "One empty duvet cover. It has no filling inside."
What is a duvet cover set?
Usually a cover with matching pillowcases or shams, and no duvet. Read the list of pieces before you buy. Our Cloud Heaven Sleep Set is different: it holds the duvet, the PureFlow Duvet Cover, 2 Cloud Pillows (Medium) and 2 pillowcases.
Does a duvet cover come with a duvet?
Almost never. Bought alone, ours does not. It works the other way round with our duvets: each one comes with the PureFlow Duvet Cover, free for a limited time.
Which end of the bed does the opening go at?
The foot. You finish putting a cover on at the opening, so it belongs at the end of the bed nobody's face is near. Ours zips closed along the foot edge.
What if my duvet has no loops for the ties?
Gather a small pinch of the duvet's corner, wrap the cover's tie around it and knot it, snug but not tight. Do the corners first: they do most of the holding. More fixes are in why your duvet moves inside the cover.
How often should you wash a duvet cover?
Our care guide says every week or two, cold and gentle "with the zipper closed", then dry low or on the line. The duvet inside needs washing far less often. Everything else is in our duvet care guide.
Do you need a top sheet with a duvet cover?
No. The cover is already the layer that comes off to wash, which is why so many people skip the flat sheet. Keep one if you love tucking in, or want a layer you can wash even more often.
Is a comforter cover the same as a duvet cover?
Yes. Some shops say comforter cover because their customers call the filled layer a comforter. It is the same empty case, sized the same way.
How this was put together: YumeFeel facts: our own product records and care guide. Fit bands: Bedsure's duvet cover size guide (same size as the insert or up to two inches smaller; labels vary by ten inches) and The Company Store's buying guide (too big will not fill, too small is hard to close). The fuller look and the two sheets line: Parachute's Duvet vs Comforter: Key Differences & How to Choose. All read 13 Nov 2026. We have not tested other brands' covers.
Loved by thousands of dreamers
The cover, and what goes in it
PureFlow Duvet Cover
Cool to the touch. Softer every wash. Free with each duvet for a limited time.
From $219 USD
