For Christmas and new year, new-looking tendency usually ranging from clothes, shoes, until a larger accessory. For that, I wonder if fashion product before Christmas and new year become the first choice, other than basic necessities.For menswear, usually they offer suit complete with shirt, jacket and tie. But most people use jacket less desirable because it looks too formal.
Therefore, we give a little reference to men who do not like the jacket. You can replace the jacket with cardigans. Cardigans is not yet widely used but, with cardigans you will not look too formal, but still polite, neat, and definitely cool.