The same is the duvet, some marked duck down, some marked goose down, what is the difference between the two in the end? Why is there a big difference in price? First of all, we need to understand a few key indicators of down, and then according to these indicators to analyse the difference between goose down and duck down in the end where.
What are the key indicators of down?
Down content
Down content refers to the amount of "down" in the down, generally speaking, the higher the down content, the lighter the weight, the better the warmth.
Down content
The down content is not an indicator of the quality of the duvet, but it does determine the value of the duvet as it represents the weight of the down. The higher the down content, the more static air it can hold and the greater the warmth it retains for the same amount of down.
Fluffiness
Fluffiness is an important indicator of the degree of warmth of down, and the standard specifies that an ounce (equal to 28.34 grams) of down occupies a space of 600 cubic inches (1 inch is equal to 2.54 centimetres), which means that the down has a fluffiness of 600.
This means that for a given weight of down, the more space it takes up, the more fluffy it is and the warmer it is.
Why is goose down more expensive than duck down?
Down is divided into down and flakes, down mainly refers to the piece of down under the belly of the goose (duck), and flakes will carry some stalks.
The type and loft of down is also a factor, the current market down material is mainly duck down and goose down.
Previously there was no subdivision, it was all down, but now it is divided into four varieties: white goose down, white duck down, grey goose down and grey duck down.
The best is white goose down (WGD), followed by grey goose down (GGD), and then white duck down (WDD) and grey duck down (GDD).
The main difference between them is the colour. And of course there is the fact that goose down is superior to duck down.
Why is goose down more expensive than duck down?
Bigger down: An important indicator of the quality of down is its fluffiness. When comparing mature goose down with duck down, goose down has longer filaments, bigger down, more fluff and more comfort, so it is better quality and relatively more expensive.
China Down Industry Association's authoritative test data show that the goose down is generally larger than duck down, fluffiness is 50% higher than duck down, so the warmth is more outstanding.
Fullness of down: the growth period to maturity of geese is at least 100 days, while duck is 40 days, so goose down is fuller than duck down.
Superior fluffiness: goose down has smaller diamond knots distributed evenly on the feather branches, while duck down has larger diamond knots and is concentrated at the end of the small feather branches, so goose down can produce a larger distance space, better fluffiness, and better warmth.
Better resilience: goose down has better curvature, is finer and softer than duck feathers, and has better elasticity and resilience.
The easiest way to check the rebound: press the fluffy down comforter, then release it and quickly rebound it back to its original shape, indicating that the fluffiness of the down is good.
No odour: geese are herbivorous, ducks are omnivorous, so the odour of goose down will be much smaller, and there is basically no odour when handled well, while duck down is more or less a bit. Of course, if there is a pungent odour, it is the quality of the down itself.
Key factors affecting the quality of down
Although we have talked about the difference between goose down and duck down, there are several other factors that determine the quality of down.
The bigger the goose, the better the down: for geese, Polish and Hungarian geese are bigger than Asian geese and therefore have better down.
The colder it is, the better the down: the best quality is found in the colder regions of the Arctic Circle (45-53 degrees north latitude).
The longer you feed it, the better the down: free-range geese and ducks have less odour, bigger down and better fluff.
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