ZITYMen's Athletic Shirts Quick Dry Short Sleeve T-Shirt Running Workout Lightweight Soft Stretchy Tee

I don't understand the size guide? is this another country's size guide? i am in usa and the man i am ordering for is usually a xxl.

The sizing description is a bit tough for me. I have the chest of a large, but the waste of a medium - can anyone offer insight to their experience?

How long is the tail . Normal or extra long

sleeves look too short?