★★★★★
Very happy
Really soft and comfy. I feel nice and warm under it, but I haven’t been getting too hot during the night. Very happy with it.
Marie, Birmingham✓ Verified buyer
24/09/2026
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Oeko-Tex® Standard 100 — tested for harmful substances
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One-Piece Duvet™
Oeko-Tex® Standard 100 — tested for harmful substances
Sale price
£69.99
Regular price
£119.97
Autumn Offer: 2 matching pillowcases free (worth £39.98)
Duvet and cover in one. 10.5 tog, warm all year. The whole thing washes in your machine at home.
- Duvet and cover in one
- Fits your home washing machine, dries in 2 hours
- 10.5 tog: warm all year
- 100 nights to try it
Free with every duvet2 matching pillowcases (worth £39.98)
Choose your set
Couple Bundle
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Duvet 1
Duvet 2
Family Bundle
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Duvet 1
Duvet 2
Duvet 3
What size do I need?
Match the duvet to your bed.
- Single · 135 × 200 cm. For a single bed (90 × 190 cm): one sleeper, children’s and guest beds. Also popular as two Singles on one bed, one each.
- Double · 200 × 200 cm. For a double bed (135 × 190 cm). The classic size for two.
- King · 230 × 230 cm. For a king bed (150 × 200 cm). Also a good choice on a double if you like plenty of overhang.
- King Extra Long · 220 × 240 cm. For a king bed if you are tall (over 6 ft) and want extra length at your feet.
- Super King · 260 × 220 cm. For a super king bed (180 × 200 cm).
Between two sizes? Go one size up for more cover. Wrong size? We exchange it free of charge within 30 days, as long as the duvet is unwashed.
Order today – dispatched within 24 hours
How many duvets?
In stock — ready to ship
Secure checkout with PayPal, Apple Pay or card
100-night trialSleep on it for 100 nights. Not for you? Get your money back.
Ten-Wash GuaranteeIf the filling clumps within ten washes, you keep the duvet and get your money back.
Free size exchangeWrong size? Swap it free of charge within 30 days.
Free UK DeliveryFree standard delivery on every UK order — no customs charges.
Before you order
Is it warm enough for winter?
Yes. It is 10.5 tog, the usual weight for a UK winter duvet. Cosy on cold nights, without the heavy feeling of an old-fashioned duvet.
Will it fit in my washing machine?
Yes. It goes in an ordinary home washing machine, so there is no trip to the launderette. Wash it at 30 °C on a gentle cycle.
How long does it take to dry?
About 2 hours in the tumble dryer on low, or hang it up to air-dry. It is back on the bed the same day.
What if it isn't right for me?
Try it at home for 100 nights. If it is not for you, send it back and we refund the duvet. Picked the wrong size? We exchange it free of charge within 30 days, as long as it is unwashed.
The Autumn Offer ends soon
2 matching pillowcases free with every duvet, worth £39.98. Only while the offer lasts.
Free pillowcases + up to 15% extra off
Don't miss your chance to never change a duvet cover again.
What's included
1 duvet and 2 matching pillowcases. Order 2 duvets and you get an extra 10% off both, plus 4 pillowcases and a storage bag, free.
Delivery & returns
Free UK delivery, arriving in 4–8 days. 100 nights to try it, free size exchange within 30 days.
The Ten-Wash Guarantee
We washed our duvet ten times at 30°C to test it. If the filling clumps within ten washes, you keep the duvet and get your money back.
Product details
The One-Piece Duvet™ is a coverless, machine-washable duvet with the cover sewn in. There is no separate duvet cover to wrestle on and off: strip it, wash it, put it straight back on the bed.
BoxLock™ construction. Every chamber is closed on all sides — 48 in a Double, 60 in a King — so the filling stays evenly spread instead of clumping into the corners, wash after wash. We washed one ten times and cut it open on camera to prove it.
All-year warmth. 10.5 tog, the classic mid-weight for UK bedrooms: warm enough for winter, light enough for the rest of the year. Soft-touch fabric with diagonal diamond quilting, certified to OEKO-TEX® Standard 100.
Sizes and washing machine guide:
- Single 135 × 200 cm — 6 kg drum
- Double 200 × 200 cm — 8 kg drum
- King 230 × 230 cm — 9 kg drum
- King Extra Long 220 × 240 cm — 10 kg drum
- Super King 260 × 220 cm — 10 kg drum
Available in nine colours: Light Grey, Black, Khaki, Green, Coffee, Wine Red, Blue, Orange and Dark Grey.
Care: machine wash at 30 °C on a gentle cycle. Use a mild detergent, no bleach or fabric softener. Tumble dry on low heat or air-dry. Can be ironed and dry cleaned.
What you get: every One-Piece Duvet comes with 2 matching pillowcases free. Order 2 duvets for an extra 10% off both, plus 4 pillowcases and a duvet storage bag free.
Free UK delivery, dispatched within 24 hours. 100 nights to try it, free size exchange within 30 days and our Ten-Wash Guarantee: if the filling clumps within ten washes, you get your money back and keep the duvet.
Why people are switching
No more wrestling with a duvet cover.
Getting a duvet into its cover means lifting, stretching and hunting for the corners. For many people it has become a two-person job. The One-Piece Duvet has the cover sewn on. Lay it on the bed, give it a shake, and your bed is made. On wash day, the whole duvet goes in your machine at home.
From our customers
What owners say about it.
“I'm 71 and wrestling a duvet cover had become a real job. With this I just shake it out and it's done. Wish I'd found it years ago.”
Margaret H., Harrogate
“At 78 I don't want fuss. This is no fuss at all.”
Arthur B., Canterbury
“Warm, soft and easy. At my age that's all I want.”
Barbara J., Eastbourne
“My granddaughter set it up for me. Now I can manage the washing myself.”
Eleanor K., Ludlow
“Worried it would be too light but it's plenty warm for our cold house.”
Daniel O., Aberdeen
“Snuggly without being too heavy. My husband pinches it every night.”
Maureen K., Blackpool
Why it stays even
The filling stays where it should. Wash after wash.
Our BoxLock™ stitching holds the filling in place: 48 quilted pockets on a Double, 60 on a King. So the duvet stays evenly warm from edge to edge, with no thin patches in the middle and no lumps at the ends, even after it has been through the wash.
Expert-recommended
“Cold spots are one of the most common reasons people wake in the night without knowing why. A duvet that keeps its filling evenly spread keeps your temperature steady, and that's what lets you stay in deeper sleep for longer.”
Louise Wilson — Somnologist
Read the full expert guide →The Ten-Wash Test
Washed ten times. Still even and warm.
We washed one duvet ten times at 30°C and tumble dried it after every wash. Then we cut it open to look at the filling: still evenly spread, no lumps. That is why every duvet comes with our Ten-Wash Guarantee.
10x
Washed at home
30°C
Gentle cycle
10x
Tumble dried
1x
Cut open to check
How it compares
The usual duvet and cover, or the One-Piece Duvet.
| Duvet + separate cover | One-Piece Duvet | |
|---|---|---|
| Time to make the bed | 8–10 min | Under a minute |
| What you wash | 2 (duvet + cover) | 1, the whole duvet |
| After washing | Cover gets washed, duvet hardly ever | Still even after 10 washes (tested) |
| Goes in your washing machine | Cover only | Yes, the whole duvet |
| Typical price | £40–90 | from £59.99 |
What customers say
4.8
based on 177 reviews
Average 4.8 out of 5 stars from 177 reviews
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★★★★★
So much less fiddly
Not having to put a duvet cover on is my favourite thing about it. Just give it a shake and straighten it out on the bed. So much less fiddly.
Peter, York✓ Verified buyer
24/09/2026
★★★★★
The filling stays where it should, so we’re not having to keep shaking it back into place. No lumpy bits or thin patches so far. We’re both pleased with it.
Marcus, London✓ Verified buyer
24/09/2026
★★★★★
Minimal and smart
Black duvet, white walls. Looks great and takes zero effort.
Toby C., Clapham✓ Verified buyer
02/04/2026
★★★★★
So comfy
Cosy and soft. I look forward to going to bed now.
Isla M., Perth✓ Verified buyer
02/04/2026
★★★★★
Minimal effort, maximum comfort
Makes my bed look good even when I've just thrown it on.
Josh K., Colchester✓ Verified buyer
03/04/2026
Reviews marked 'Verified purchase' were matched to an order in our shop. We publish positive and critical reviews alike and only check beforehand for spam and unlawful content.
Before you ask
Questions people ask before they buy
Will it fit in my washing machine?
Yes. It goes in an ordinary home washing machine: 30°C on a gentle cycle, then tumble dry on low or hang it up to air-dry. No launderette, no dry cleaner.
Will the filling go lumpy after washing?
No. Our BoxLock™ stitching holds the filling in place in quilted pockets (48 on a Double, 60 on a King), so it stays evenly spread. We tested it with ten washes in a row.
What if it isn't right for me?
You have 100 nights to try it at home. Picked the wrong size? We exchange it free of charge within 30 days, as long as it is unwashed. And with our Ten-Wash Guarantee: if the filling clumps within ten washes, you keep the duvet and get your money back.
How long does it take to dry?
About 2 hours in the tumble dryer on low, or hang it up to air-dry. Give it a good shake afterwards and it is back on the bed the same day.
100-Night Trial
Free Size Exchange
Ten-Wash Guarantee
Free UK Delivery