Alaskan King Comforter
Comforters and duvets sized to fit the massive 108" x 108" Alaskan King mattress. Finding the right oversized comforter ensures proper coverage and a polished bedroom look.
Top Picks
OCOCHI
Down Alternative & Bamboo Comforters
- ✓Multiple fill types: down alternative, bamboo, microfiber
- ✓Duvet covers and sets available
- ✓Ships worldwide
Big Mattress Co.
Oversized Comforter Sets
- ✓Affordable down alternative fills
- ✓Matching sheet sets available
- ✓100-night trial on mattresses
Alaskan King Bed Co.
Luxury Bedding Sets
- ✓High-end materials and construction
- ✓Coordinated bedding collections
- ✓Made in USA
Buying Tips
- Look for comforters at least 120" x 120" to ensure proper drape on all sides
- Consider a duvet with removable cover for easier washing
- Down alternative fills are easier to find in oversized sizes than genuine down
- Check if the comforter is machine washable–oversized items may require commercial washers
Where to Buy
Last verified: February 2026
4 sellers currently offer Alaskan King bedding and sheets.
Fill Types and Warmth
Alaskan King comforters come in several fill types, each with different warmth and weight characteristics:
Down alternative (polyester fill)
$150–$300The most common option at this size. Lightweight, hypoallergenic, machine-washable. Good for moderate climates and people who prefer easy care.
Down (goose or duck)
$300–$600+Warmer, lighter, and more luxurious than synthetic fills. Requires dry cleaning or a very large capacity washer. Limited availability in 108" × 108".
Bamboo or microfiber
$150–$300Moisture-wicking and lightweight. Good for hot sleepers. Available from OCOCHI.
Wool
$400+Natural temperature regulation – warm in winter, cool in summer. Heavy. Very limited in Alaskan King size.
Important consideration: An Alaskan King comforter is enormous. Make sure your washing machine or dryer can handle it. Many owners use a commercial/laundromat machine for washing oversized comforters, or choose a duvet with a washable cover instead.
Duvet Cover vs Comforter: Which to Buy
At Alaskan King size, a duvet with a removable cover is often more practical than a standalone comforter:
Duvet + cover advantages
- ✓Easier to wash – you wash the cover, not the entire filling
- ✓Easier to change styles – swap covers seasonally
- ✓Standard washing machine can usually handle just the cover
- ✓If the duvet insert gets too warm/cool, swap inserts without replacing everything
Standalone comforter advantages
- ✓Simpler – no inserting duvet into cover (which is a workout at 108" × 108")
- ✓Often cheaper upfront
- ✓No bunching or shifting inside a cover
If you go the duvet route, check that the cover and insert dimensions match. An Alaskan King duvet cover should be 108" × 108" or slightly larger (110" × 110") to accommodate the fill without being too tight.
Frequently Asked Questions
What size is an Alaskan King comforter?
An Alaskan King comforter is typically 120" x 120" (10 feet x 10 feet) to provide proper overhang on the 108" x 108" mattress. Some sellers offer 132" x 120" for extra drape on the sides. Standard King comforters (104" x 88") are far too small.
How big is an Alaskan King comforter compared to a King?
An Alaskan King comforter (120" x 120") is 77% larger than a standard King comforter (104" x 88"). That's 100 square feet vs 63.5 square feet of coverage. You cannot substitute a King comforter - it won't reach the sides of a 9-foot bed.
Where can I buy an Alaskan King comforter?
Four verified sellers offer Alaskan King comforters: OCOCHI, Alaskan King Bed Company, Big Mattress Co., and Mattress Insider. Prices range from $150 for down alternative to $600+ for genuine down fill. See our seller table above for current pricing.
What size blanket fits an Alaskan King bed?
Look for blankets at least 120" x 120" for proper coverage on a 108" x 108" Alaskan King mattress. Oversized King blankets (108" x 90") won't provide adequate coverage. OCOCHI and Alaskan King Bed Co. sell Alaskan King-specific blankets.
Do I need a special duvet cover for an Alaskan King?
Yes. Alaskan King duvet covers are 120" x 120" or larger to fit the oversized duvet insert. Standard King duvet covers (104" x 88") are too small. OCOCHI, Alaskan King Bed Co., and Big Mattress Co. carry Alaskan King duvet covers in cotton, bamboo, and microfiber.
How much does an Alaskan King comforter cost?
Alaskan King comforters cost $150-$600+ depending on fill type. Down alternative (polyester) fills run $150-$300. Genuine down comforters cost $300-$600+. Bamboo and microfiber options fall in the $150-$300 range. Duvet covers add $100-$200.
Can I use two King comforters on an Alaskan King bed?
Some couples use two separate King comforters side by side (the 'Scandinavian method'). This works but leaves a visible gap in the middle and doesn't look as polished as a single oversized comforter.
What's better for an Alaskan King: comforter or duvet?
A duvet with a removable cover is often more practical because you can wash the cover in a standard machine without dealing with the massive comforter itself. However, inserting a duvet into a 120" x 120" cover is a workout. Standalone comforters are simpler but require commercial washers.