vince, i'm 6'2" and 265 in the pic in my avatar. my arms are 19.5" or so pumped, right on the 19" border cold. look at my picture for a moment, look at yours, then try and explain how your arm could be an inch bigger than mine despite looking six inches smaller. a 20" arm at any height is huge, it would look like it's 20" were that the case.