Cold Resistant and Down Resistant Fabric 

A mixture of small feathers and down (also called fluff). The former is called feather and the latter is called down. Duck and goose feathers are mostly used, and the small feathers and down are separated by washing and used as the flock of down jackets. There are two kinds of down, gray and white, the white one is better. The quality of down jackets is related to the amount of down filling and down content. The amount of down filling refers to the weight of down into a down jacket, expressed in grams, the amount of down filling is small, and the warmth retention is poor; the amount of down content refers to the content of down in the down, expressed as a percentage, the higher the down content, the better the quality.