This jersey is awesome, reminds me of my old baseball under shirts I used to wear in little league. I trail ride in SoCal and this summer has been really hot. This jersey feels comfortable and wicks away sweat good. Fit is snug, which is the way I like it. I don't like to wear a parachute down the mountain. I bought a Dakine jersey in medium and that one was a parachute. I'm 5,7 and 140lbs. the medium fits me perfect.