Is the chest size measurement based on your chest size or the chest size of the shirt?
So i'm planning on buying a light weight hoodie from shirt woot but I'm unsure on how the sizing chart works for the chest area. If I were to buy a small, does this mean my chest size should be 18 inches (meaning the hoodie they send will be a bit wider than 18 inches) or the chest size of the hoodie/shirt will be 18 inches when ordered? I don't want my hoodie to be my exactly the size of my chest or it'll be uncomfortable. I'm 5'7 and my chest area is roughly 18 inches and i'm 135 pounds