I am not a small guy - 6' and 193lbs. 42" chest and 36" waist. I am not obese, but no where near skinny, small, thin, light etc. So why the hell do I swim in size large golf shirts or jeans "marked" size 36. I have to say I rarely buy casual clothes - I may wear jeans once every couple weeks. Any how it was time for me to buy some new jeans, some new golf shirts and a few t shirts. It has been a while since I shopped for this kind of stuff and I assumed I would be a large? But size large seems to have jumped up to size XL or even XXL from a few years ago. One Nike golf shirt was too big in size M. And dont get me sarted on jean sizes at Banana Republic - i think the trick there is the square root of your waist measurment equalls your size. I am not sure what the hell you guys who are thin, skinny or small wear?