If it is a winter school uniform outside, it is essential to have a warm sweater inside. If it is a turtleneck, pure white looks better. I don't like those with high collars. If you like the solid color of a low-necked sweater, you'd better not be too bright. This is good, very elegant. Boys are predominantly black.

In addition, if boys take off their winter coat hats, they will look thinner and not bloated. You can also wear a sweater and a hooded one inside. It's not good to take off your handsome coat in hot weather.