Difference one, the color is different. Down is divided into down and wool. Down mainly refers to the plush under the belly of a goose or duck, while wool will bring some stalks. The type and fluffy degree of down are also factors of 1. At present, the down raw materials on the market are mainly duck down and goose down. It used to be down, but now it is divided into four varieties: white goose down, white duck down, grey duck down and black duck down. The best is white goose down, followed by grey goose down, followed by white duck down and grey duck down. The main difference between them is color. Of course goose down is better than duck down. White goose down has two advantages: because it is white, it can be widely used in light-colored fabrics and is opaque; The advantages of fine, soft and long fiber structure, especially long fiber, make it fluffy and warm. However, duck down is relatively easy to harden because of its short fiber, which affects its thermal insulation. From May 1 2004, the new down specification was adopted in China market, and the down content was replaced by the down content in the new specification. ? The main difference between white duck down and grey duck down is the color.
The second difference is the difference in price. White duck down of the same quality is more expensive than grey duck down because of its high cost. Most of the south is lake duck down, almost all of which have black and gray hair. The number of white ducks is less than that of gray ducks, and the yield of white duck down is naturally less, so the price is naturally expensive. But when it comes to warmth, the two are the same! It's just a gimmick for business promotion! No one can see it in there anyway! You can't look at a person and say I'm wearing a white eiderdown coat! People can't say that your grey duck down down jacket is really nice!
The difference between white eiderdown and gray eiderdown in warmth retention is the same. The reason why it is gray is because considering the problem of down jacket drills, light-colored fabrics generally choose white down, that is, a small number of drills are not obvious, while gray is the opposite. Moreover, the cashmere content of long down jackets will be higher, and the short ones will be lower. The higher the cashmere content, the better. Theoretically, a higher cashmere content of 70% and 90% will have a better warm-keeping effect, but the actual warm-keeping effect is similar, which is generally beyond our understanding and is also a psychological factor.