The Castelli Garmin-Sharp Climbers Full Zip Jersey by Castelli is similar to the Pro Team Aero jersey, but focuses more on wicking moisture away from your body during hot rides. The material on the chest and back panels is a three dimensional jersey fabric that raises the jersey off your skin and creates a moisture gradient moving sweat away from your body and towards the outer layers of the jersey. This jersey does have a similar fit to that of the Pro Team Aero Jersey.
Because this jersey was created for one purpose, the fit is smaller than other Castelli jerseys. Castelli recommend two things: please size up from your regular Castelli jersey size. If you normally wear a medium, you will be most comfortable with a large jersey. Don't worry, large jersey doesn't mean you've packed on extra weight! Additionally, please try this jersey on in a simulated riding position before you decide that it is too small for you. Castelli apparel is cut to fit you best when you are on the bike, not when you're off the bike.