Duvella – Diamond-Quilted Cloud Duvet Insert
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Finally, A Duvet That Lets You Sleep
At our age, you toss and turn half the night.
You shift the duvet, find the flat spot, and start over.
Duvella is different the moment you pull it up: light, soft, and cloud-like across your whole body.
The diamond-stitch quilting locks the fill in place, so it can't slide into lumps or cold spots.
No flat middle to fight. Just one even layer of warmth, all night.
Stitched in a grid, so the softness stays where you put it
✓ No cold spots
The diamond-stitch quilting keeps the fill locked in an even grid, so it can't bunch up or shift into cold, flat patches while you sleep.
✓ Build to hold its shape
The quilted grid holds the fill in place through every wash cycle, so it keeps its loft instead of clumping over time.
✓ No more flat spots
Because the fill can't migrate, you get one consistent layer of warmth across the whole duvet, night after night.
✓ Rest like you mean it
Whether you toss, turn, or resettle a dozen times, the quilting keeps everything even, so you're never left fighting a flat spot.
What you get today
- 1 x Duvella Diamond-Quilted Cloud Duvet Insert
Only a limited number are available this week.
Get your Duvella Diamond-Quilted Cloud Duvet Insert today and finally sleep through the night without the midnight shuffle.
30-day comfort trial
If it doesn't feel right after sleeping under it for a few nights, you're covered within 30 days of delivery.
Frequently asked questions
Will this actually feel different from the flat duvet I have now?
Yes, the diamond-stitch quilting keeps the fill locked in place so it stays soft and cloud-like instead of flattening out over time.
Will it stay fluffy after washing?
Yes, the quilted grid holds the fill evenly in place through washing, so it keeps its loft instead of clumping.
What size does the duvet insert come in?
Please check the size options on the product page to find the right fit for your bed.
Can I use my existing duvet cover with it?
Yes, it fits standard duvet covers matching its size.
Specifications
- Diamond-stitch quilted construction
- Soft, cloud-like fill
- Even grid pattern locks fill in place
- Machine washable
How to use it
- Insert into your existing duvet cover
- Fluff gently before use for maximum loft
- Wash according to care label instructions
We choose natural, hard-wearing fibers — wool, cashmere, cotton and suede — so each piece looks better with every season. The exact composition is listed in the description above.
Knitwear: hand wash cold or dry clean, lay flat to dry, store folded.
Coats & jackets: dry clean only; brush wool gently after wear and hang on a wide hanger.
Suede & leather: protect with a water-repellent spray and brush with a suede brush.
Free US shipping on every order.
Processing: 1–3 business days · Delivery: 3–5 business days after dispatch.
Ships from our North American warehouse with tracking.
90-day returns. Email us and we'll send you a printable return label. Return shipping is paid by the customer — except for wrong, damaged or defective items. Full return policy
Our pieces are cut for a relaxed, layered fit. If you're between sizes, size down for a closer fit or up for room over knitwear. Not sure? Use Find my size on any product page — you'll have your size in a few seconds.
Women
| Size | US | Bust (in) | Waist (in) | Hips (in) |
|---|---|---|---|---|
| XS | 0–2 | 31–32 | 24–25 | 34–35 |
| S | 4–6 | 33–34 | 26–27 | 36–37 |
| M | 8–10 | 35–36 | 28–29 | 38–39 |
| L | 12–14 | 38–40 | 31–33 | 41–43 |
| XL | 16 | 41–43 | 34–36 | 44–46 |
| XXL | 18 | 44–46 | 37–39 | 47–49 |
Men
| Size | Chest (in) | Waist (in) | Neck (in) | Sleeve (in) |
|---|---|---|---|---|
| S | 35–37 | 29–31 | 14–14.5 | 32–33 |
| M | 38–40 | 32–34 | 15–15.5 | 33–34 |
| L | 41–43 | 35–37 | 16–16.5 | 34–35 |
| XL | 44–46 | 38–40 | 17–17.5 | 35–36 |
| XXL | 47–49 | 41–43 | 18–18.5 | 36–37 |
Shoes
| US Women | US Men | EU | Foot length (in) |
|---|---|---|---|
| 6 | — | 36 | 9.1 |
| 7 | — | 37–38 | 9.4 |
| 8 | 6.5 | 38–39 | 9.8 |
| 9 | 7.5 | 40 | 10.0 |
| 10 | 8.5 | 41–42 | 10.4 |
| — | 9.5 | 42–43 | 10.6 |
| — | 10.5 | 44 | 11.0 |
| — | 11.5 | 45 | 11.3 |
| — | 12.5 | 46 | 11.6 |
How to measure
Bust / chest
Measure around the fullest part, keeping the tape level under your arms.
Waist
Measure around your natural waistline, the narrowest part of your torso.
Hips
Stand with feet together and measure around the fullest part of your hips.
Foot length
Stand on a sheet of paper, mark heel and longest toe, and measure the distance.
Questions about fit or fabric? Email us: contact@highline-hart.com
