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Cal King Duvet Cover 110"×100" | Combed Cotton | Extra Large California King Size

The California King oversized combed cotton duvet cover measures 110 inches by 100 inches (279 cm by 254 cm) — significantly larger than a standard King duvet cover, which measures only 102 inches by 90 inches (259 cm by 229 cm). This cover is specifically designed for California King beds and for thick, deep mattresses where standard King covers fall short on all sides.

Made from 300 thread count 100% combed cotton satin. Available in white, grey, and pale blue. Zipper closure. Four internal corner ties. Machine washable.

Size Comparison: California King vs Standard King

Width × Length (inches) Width × Length (cm)
Standard King duvet cover 102" × 90" 259 cm × 229 cm
California King oversized (this product) 110" × 100" 279 cm × 254 cm
Difference +8" wider, +10" longer +20 cm wider, +25 cm longer

Most Canadian bedding stores carry standard King covers only. If you have a California King mattress (72" × 84" / 183 cm × 213 cm) or a mattress over 15 inches (38 cm) in depth, a standard King cover will not provide proper drape. This cover at 110" × 100" (279 cm × 254 cm) gives you 10 to 12 inches (25 to 30 cm) of coverage on each side of the mattress — the standard for a properly made bed.

Specifications

Size: 110" × 100" (279 cm × 254 cm) — California King / Super King oversized

Fabric: 300 thread count 100% combed cotton satin

Closure: Full-length zipper

Corner ties: 4 internal ties anchor your duvet insert — no shifting during sleep

Colors: White, Grey, Pale Blue

Care: Machine wash cold, delicate cycle. Tumble dry low. Do not bleach. Remove promptly.

Made in China

What Is Combed Cotton Satin?

Combed cotton means the fibres have been combed before weaving to remove short, rough strands — leaving only the longest, smoothest fibres. Satin refers to the weave pattern: threads pass over four and under one, creating a lustrous, silky surface. The result is a duvet cover that is noticeably softer and smoother than standard plain-weave cotton at the same thread count, with a subtle sheen that looks elegant on the bed.

Who Needs This Size

This cover is the correct choice for:

  • California King mattresses (72" × 84" / 183 cm × 213 cm)
  • Mattresses 15" to 20" (38 cm to 51 cm) in depth — pillow-tops, luxury foam, memory foam
  • Adjustable bed bases, which add height to the sleeping surface
  • Anyone who has tried a standard King cover on a larger bed and found it rides up the sides

Complete the Set

This listing is a duvet cover only — no insert included. It pairs directly with the Cal King Goose Down Duvet (110" × 100" / 279 cm × 254 cm), which is filled and finished in Canada with 550 loft white goose down. Buying the insert and cover in the same 110" × 100" size ensures the duvet fills the cover fully, lies flat, and performs as intended.

What Customers Say

"As described, 100% cotton cover is soft and smooth. We don't use a top sheet so comfortable feel is important. Love the corner ties — every duvet cover should have them." — Maureen F., verified buyer

"Corner ties and tabs made it easier to manage the cover and prevent shifting of the duvet. After using it for several months, it has become part of my sound sleep. So cozy and comfy, highly breathable." — Samuelfelipe M., verified buyer


Frequently Asked Questions

What size is this duvet cover?

This cover measures 110 inches by 100 inches (279 cm by 254 cm). This is the California King oversized size — not a standard King. A standard King cover measures 102" × 90" (259 cm × 229 cm).

Will a standard King duvet fit inside this cover?

A standard King duvet (102" × 90" / 259 cm × 229 cm) will fit inside this cover but will not fill it completely — it will shift around because the cover is larger than the insert. For best results, use this cover with a 110" × 100" (279 cm × 254 cm) Cal King oversized duvet insert.

Does this cover include pillow shams?

No — this is a duvet cover only. For a full set with two matching King pillow shams, see the California King Cotton Duvet Cover Set (110" × 100") also available on this site.

What is the difference between this cover and the bamboo Cal King cover?

This cover is 300TC combed cotton satin — a smooth, breathable, traditional natural fibre that gets softer with washing. The bamboo Cal King cover is 310TC bamboo — slightly softer initially, more moisture-wicking, and preferred by hot sleepers or those with sensitive skin. Both are the same size: 110" × 100" (279 cm × 254 cm).

Is this machine washable?

Yes. Machine wash cold on a delicate cycle. Tumble dry on low heat. Do not bleach. Remove from the washer promptly to prevent wrinkling.

Where can I find the matching duvet insert?

Down Under Bedding carries the Cal King Goose Down Duvet in the same 110" × 100" (279 cm × 254 cm) size — filled and finished in Canada. Contact us by text, chat, or email for assistance.

Size: California/Super King
Color: Pale Blue

1 item left

Product Description
Reviews

Customer Reviews

Based on 3 reviews
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I
Irene Kirec

Cal California King Extra Large Combed Cotton Duvet Cover with Corner Ties

Thank Irene, for sharing your most valuable feedback. Always cover your duvet to keep it clean..
Keep and using natural fibers.
Don't forget to check out our sleep blog
https://downunderbedding.com/blogs/news

M
Maureen Fitzgerald
Very Nice!

As described, 100% cotton cover is soft and smooth
We don't use a top sheet so comfortable feel is important. Love the corner ties. Every duvet cover should have them.

Hello Maureen - Thanks for sharing your honest experience.
This is one of the our best selling duvets as the larger Cal King size is 110' x 100' versus only 102' x 90' on the regular king size.
Please call one of our Sleep Experts if you have any detailed questions as - everyone sleeps differently. We ask everyone reading this to visit us at this link for special offers and reviews: https://downunderbedding.com/blogs/news

S
Samuelfelipe Muñoz
Extra Large, Extra Durable!

Being a big man brings extra necessities like a big bed and big duvets. To fit my big duvets, I required big duvet covers that make its presence durable. But after trying a lot of duvet covers made of Microfiber, I just realized that it was nothing but a marketing term to conceal the fact that it is polyester that started pilling after several washes.
What made me change my mind about duvet covers was the irritation caused by pilled duvet covers. I was missing my deep sleep for so long when I found this combed cotton duvet cover in an extra-large size that was perfect for me.
The bright white color of this duvet cover goes perfectly with my interior and preference. I always looked for something simple. I hate unnecessary stitching here and there, so the duvet cover was something that I was looking for.
Corner ties and tabs made it easier to manage the cover and prevent shifting of the duvet. I just don’t know much about thread count but it felt amazingly comfortable. My wife scolded me for choosing this bright white color but realized her mistake after washing it in the machine. Making her realize the mistake is a great achievement, isn't it?
I then decided to scold the duvet cover a bit but it remained as it was which clearly showed me that the duvet cover is going to last long. I have no interest in shifting to a new cover till it lasts. After using it for several months, it has become part of my sound sleep.
So cozy and comfy, highly breathable, solid white duvet cover gives me the satisfaction I never got before.

Hello Samuel - Thanks for the detailed review. The Cali California extra-large super king size duvet omforter cover 110' (280cm) X 100' (254cm).
Compared to a regular king size of 102' (260cm) X 90' (228cm). We asking everyone reading this to visit us at this link for special offers and reviews and learn more about healthy sleep solutions and sizes:
https://downunderbedding.com/blogs/news