I came across this item when I was trying to find a light, fluffy and warm jacket in the US.
Instead of calling it a goose (or duck) feather jacket, meaning the jacket is filled with these fluffy feathers, they mostly use down jacket. Down means the inner fluffy part of the feather.
A down jacket is what you want for bitter cold days!
I need a down blanket to warm me up!
Hope that can be useful.