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Actually, the new school jacket is made of "thinsulate". This is a new material invented by 3M just a year or two. This is a very good material to keep warm. Some people said its better than down. I have a jacket made of thinsulate as well. Its very very good. The new school jacket can block the wind as well as keep warm.
That's why the k1 student is not advised to use their own jacket as the school one is good enough. |
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