12 degree wear down jacket?

You can wear it. 12 degrees is relatively low, and it will be colder if there is wind, which is suitable for wearing thin down jackets. Down jacket: a coat filled with down, huge and round, with duck down accounting for more than half. At the same time, you can mix some tiny feathers and fill them in your clothes, which is the down jacket. Down jackets have the best warmth retention. Most of them are worn by people in cold areas and are also commonly used by polar explorers.