I bought this for my niece. Here's what she had to say:
"A good shirt to stay cool and dry for long rides. I have the white, which reflects the sun and keeps me cooler then the darker colors would, though it does show off the dirt. The three pockets in the back are convenient for little snacks, and I even stashed my iPhone back there, where it stayed secure and out of the way on a two hour ride. Size S fits perfectly on me. For reference I am 5'6'' 112 lb."