This is a great jersey, that is meant to fit tight. I'm 6 ft, 170 lbs, with a 39 inch chest and I wear a medium comfortably. I originally ordered a large due to other reviews I found about Gore sizing, but I switched to a medium, which is what I wear in most other jerseys. I love the light, breathable feel of the fabric and fit, and wear this jersey mostly in 80+ degree weather (I live in Hawaii). I particularly like the full zip, and the partial rubber gripper on the bottom rear of the jersey. All this being said, I would not pay $110 for this jersey, since it can be found online in the $55-$70 price range.