Cosybay Feather and Down Fiber Comforter Queen
- Queen size, 90 x 90 inches
- Feather and down fiber fill
- 100% cotton cover
- Medium warmth, medium for 55 to 77 degrees F
- 3 inches thick, 3.18 kilograms
- OEKO-TEX certified, box quilted
- Machine washable
Last refreshed Sep 9, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A queen feather and down fiber duvet insert with a cotton cover, box quilting and OEKO-TEX certification. Medium warmth suits mild rooms, with heavier warmth noted for colder spaces.
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ASIN: B0GH7VDD65Category: Duvets & Down Comforters
Colors Available
Sizes Available
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Overview
Box quilted stitching holds the feather and down fiber fill in place inside an all cotton cover trimmed with piping, for use alone or inside a duvet cover.
Medium warmth across a wide temperature band and an insert format suit layering. Fill power, fill ratio and corner loops are not listed.
Who it's for
Guest rooms and main bedrooms that want a fluffy hotel style insert for year round use. Allergy sufferers should note that feather and down is the fill.
Pros and cons
- Box quilted stitching
- All season rating
- Fill power not listed
- Corner loops not mentioned
- Feather and down fill
Performance notes
Feather and down fiber traps air for warmth, and box quilting stops the fill shifting into clumps. The listing places medium warmth in a mild temperature band and heavier warmth for cold sleepers and cold rooms.
Specifications
| Brand | Cosybay |
|---|---|
| Dimensions & fit | |
| Size | Queen |
| Item Dimensions L x W | 90 x 90 inches |
| Item weight | 3.18 kg |
| Construction & materials | |
| Fabric Warmth Description | Medium/heavyweight |
| Fill Material | Feather and down fiber |
| Fabric Type | 100% cotton fiber |
| Color | White |
| Included components | |
| Included Components | Comforter only |
| Other details | |
| Item Thickness | 3 inches |
| Seasons | All |
| Product Care Instructions | Machine wash |
| Additional Features | Durable, hotel quality, OEKO-TEX certified, box quilted, piping |
Closest rivals on specs
Serta Goose Feather Down Fiber Comforter Queen- Item Thickness 3 vs 2 inches (+50%)
- Item Weight 7.01 vs 8 pounds (-12%)
Utopia Bedding Down Alternative Comforter Queen- Item Weight 7.01 vs 4.7 pounds (+49%)
Linenspa Down Alternative Comforter Queen- Item Thickness 3 vs 0.5 inches (+500%)
- Item Weight 7.01 vs 5.1 pounds (+37%)
Frequently asked questions
Will the Cosybay comforter insert fit a king bed?
No. This listing is queen at 90 x 90 inches.
Does the Cosybay comforter insert have corner loops?
The listing does not mention loops. It describes box quilting and piping.
Is the Cosybay comforter insert machine washable?
Yes. The care instructions say machine wash.
Is the Cosybay comforter insert suitable all year?
The seasons field says all. Medium warmth is listed for a mild band and heavier warmth for cold rooms.