The Gabba 2 is a technical marvel. It feels like a jersey and protects like a softshell. Gore's incredible Windstopper X fabric is super light and completely windproof, yet it breathes well and lets moisture and water vapor escape so you don't feel clammy. Not only is it technically amazing, but the Cannondale Garmin Team version is rocking the team colors and the kind of Italian style that only Castelli can pull off. The Gabba 2 embodies Castelli's ethos of minimalism in construction by using as few fabrics and seams as possible. With the exception of the stretchy Nano Flex inserts in the underarms, the entire jersey is made from Windstopper X Lite fabric. Windstopper X Lite has 1. 4 billion impossibly small pores per square inch that guard your microclimate jealously. They don't let wind in, but they do let moisture and water vapor out. This isn't just based on vague marketing copy, though. The science behind Windstopper X Lite is measurable in a rating called CFM, which stands for cubic feet per minute, used to measure the volume of air that passes through a fabric in, you guessed it, one minute. In order to be considered truly windproof, a fabric must register a CFM of equal to or less than 1. 0. The Windstopper X Lite fabric actually beats this rating, so you're guaranteed a top that is literally classifiable as windproof. It's also treated with a water repellant finish, so it keeps the warmth in and the rain out while wicking moisture from your skin. Gore Windstopper is amazing stuff, but it's not limited to Castelli. The new Gabba 2 had to stand out in some other way. Castelli was birthed by the work of Vittore Giani, a tailor from Milan, so it plays to the strengths of its legacy: sexy aesthetics and uncompromising fit. The fit truly defines the jersey, but it's worth noting how Castelli's artful minimalism informs the Gabba 2's looks, too. The jersey is primarily one color, but the barest hints of Castelli's signature red and a tastefully sized scorp...