1, determine their own needs style, is as a jacket to wear or as warm with in it, because different styles of sweater, the difference is still very big. 2, for the choice of material, the market is mostly wool, cotton and blended, mohair, etc., you should pay attention to, those playing the flag of not pilling, is likely to be chemical fiber material impersonation. 3, according to their existing clothes to do with, haphazardly buy words only to buy a sweater, and have to buy a jacket. For example, their own winter jacket is a stand-up collar, do not use the high collar sweater to do with, with the coat is very good.