I'm 6 ft tall 155 pounds. Is a medium ok?
I would go with the Large my man. I am 6' 165 and wear a medium.
I think Lyman meant a medium. I'm 6' and 195 and rock the Large. I guess it depends on your arm length... if you have long arms drop in on the Large, if you have SHARMS (SHort ARMS) go for the medium.