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.
