When I bought a down jacket, the introduction said it was white goose down, but it was clearly written white duck down. Is the introduction really unbelievable? Is this selling duck down with goose down? Goose down jacket is much more expensive than duck down jacket. Compared with duck down, goose down has the advantages of large down, high hollowness, good bulkiness, excellent resilience and stronger warmth retention. In addition, relevant experts also admit that, on the whole, all the indexes of goose down are better than duck down. When talking about the difference between goose down and duck down, down experts pointed out that duck down has two problems. First, ducks like to eat worms in the water, so duck down generally smells like fish (people in the industry call it "duck body odor"). In order to remove odor, some processing plants even use deodorant in the process of decontamination and degreasing. Although the newly bought down jacket can't smell, it will recover its smell in a few months, and it will take at least one year to distribute naturally. Goose is a herbivore, and there is no odor problem in goose down itself, which ensures environmental protection from the source of raw materials.