To find the warmest duvet, we need to determine the warmest duvet filling material.
In terms of heat retention and the ability to used as filling, these are the warmest fibers by weight:
- Qiviut [Musk Ox Wool]
- Yak Wool
- Alpaca Wool
- Camel Wool
- Sheep’s Wool
For more details, see my article explaining why these wools are ultrawarm.
After testing duvets filled with Camel, Alpaca, and Merino wool, I found that Camel wool is indeed the warmest inside a comforter.
All of these wools contain no lanolin so they are hypoallergenic and odorless.
They have good moisture “wicking” properties. This means that moisture is absorbed by the fiber. This keeps sweat away to be released to the outside of the duvet.
This is the duvet I found to be the warmest:
Warmest Practical Choice
The 100% Camel Wool Duvet by Healthline — $229 for King Size. This comforter/duvet is “extra weight” (450 g/m2 – grams per square meter). Camel wool is a light and warm fiber.
Another good choice is the Premium Australian Washable Wool Duvet by Down Under Bedding – an season blanket this is filled with washable wool – King Size, Medium Weight – $249.
Tthe absolute warmest duvet on the market is the qiviut duvet:
Warmest Duvet Available
100% Qiviut Duvet – $4049 for King Size. Qiviut (musk ox woo) is the warmest and lightest wool in the world.
Alpaca Duvet
This Alpaca duvet I have tested and it is also very warm:
I used this blanket, it was really amazing, very warm but very light and soft.
Inca Fashions offers the heaviest alpaca comforters of the three listed here. Their Heavyweight Comforter offers 450 grams of fiber per square inch…..