As you're waving at a receding winter as it sinks further into the horizon under a higher and higher sun you'll need a lightweight shell that protects from the still cool air and spring rain as you roll towards summer. The Castelli Alpha RoS 2 Light Jacket fills that role with honor and inherits all the winning qualities of the Alpha RoS 2 but in a more breathable design. GORE-TEX on the front and sleeves shields your torso from misty rain and chilled wind while the lighter insulating layer of the RoS 2 Light manages to keep you comfortable in on hard-hitting training rides as body-heat builds. Nano Flex Xtra Dry on the back adds a thin barrier that repels rain while promoting additional heat loss and sweat evaporation.The extremely versatile shell boasts three rear pockets to provide ample room for valuables and snacks. The semi-fitting cut allows room for your favorite baselayer or training jersey without a sacrificing range of motion or freedom.