I have a bunch of Castelli jersey, and all of them were XL. They fit me well. However, three months ago I bought another Castelli jersey, still XL, it ran too loose. Then I exchanged with a Large and it fits me good. This time I bought a Large directly, learning from the last experience, but it runs too small. I literally have no idea about what's going on with Castelli's fitting.
Nice form fitting jersey with useable pockets. I am a 40 chest and weigh 150 lbs. L is perfect. Very comfortable and does what it is advertised to do!
