The most common fillings in Mid-length down jacket (universal version for men and women) are goose down and duck down, which can be divided into white down and grey down by color. The down jackets on the market are sorted by price: white goose down>grey goose down>white duck down>grey duck down. It may be affected by the order of price, so many people think that the quality of these fleece is also in the same order, but it is not. Through theoretical research and practical experience of down, in general, goose down with the same quality and down content is better in warmth retention and bulkiness than duck down, but the color has little to do with the quality of down jackets.

As for why white velvet is more expensive, I think the main reason is because white velvet looks better than gray, and it is not transparent in light or dark fabrics; while gray velvet is more selective, only Mid-length down jacket (universal version for men and women) can be placed in in dark fabrics. Considering the light color of white, the range of suitable fabrics is wider. The second reason: the fiber structure of white velvet. Its fibrous tissue is relatively thin, soft, and long, and the fiber length makes it more bulky and easier to keep warm.

Generally larger, more mature birds have better down quality, so geese have better down. But the production process of goose down and duck down is the same, and there is not much difference between the two in terms of quality, bulkiness and warmth retention.

The above is some introduction about the filling of Mid-length down jacket (universal version for men and women), do you all understand?