The collar of a man's shirt is a closed door collar. It is not suitable to be a chest door. Besides, it is not appropriate to let off a large float in the armhole. So the chest can only be closed, so that the chest line of the front garment will float 1.5 to 2 centimeters.

Flush the chest line on the front piece, which will cause the flat line of the front garment to fall by 1~2 centimeters, and the front shoulder angle also shrinks 2~3 degrees.

In addition, the male shirt is a three-dimensional collar, and the shoulder joint angle can not be set up, generally not more than 18 degrees. The eating potential of the suture line of the back garment piece must be closed.

Therefore, the sleeves of men's shirts should be set up as middle low sleeves or low sleeves.

Some shirts are more body fitted. The performance of the shirts is poor in size, low in waist and lower in sleeves.