a warm coat filled with thick soft material sewn into sections, especially one in which the sections look as though they are puffed up (= full of air)

She is wearing a puffer coat with a fur-lined hood. 她穿着一件带毛皮兜帽的保暖大衣。

Now the weather's getting colder, I've rediscovered my old puffa coat. 现在天气越来越冷，我又把一件旧的保暖大衣找了出来。