800 grams. Down jacket is a necessary warm clothing in winter, he is full of down, if you want to make the down jacket more thick, wear more warm, it must use at least 800 grams of down.
If the amount of 800 grams of down is still cold, then you can put a thin sweater inside the down jacket, so that you can keep out the cold. Most of the down jacket filling volume is about 60%, and the effect of preventing cold is very good
Down jacket is super inch 1800 grams even thick, because down jacket does not need to be too thick, fluff and fluff door has no circulation of air, so do not need too much down.