What size shirt?

[Maddawg]

I want to but this shirt but i dont have any idea to what size i should buy. I want my arms to show some. I hate shirts that go down to my elbow.
Im 180lbs. 5 foot 11 inches. Is a medium alright for me or should i buy a large?
http://www.bodybuilding.com/store/tshirts/priceless.html

[APBTOwner]

A MD should be fine, Im 5'11 190 and a MD if me fine. 15 years old, damn your going to be a big boy.

[Maddawg]

Thanks Man, i just ordered 3 medium shirts. I hope they fit.