With a refined, form fit and just a few subtle graphics, the Castelli Men's Velocissimo Tour Full Zip Jersey is the ideal summer kit topper. It was made with a blend of Castelli's best lightweight technical fabrics to keep you cool and comfortable in the saddle this year. Castelli constructed the Velocissimo from its proprietary Prosecco Strada fabric. This material features controlled stretch, low weight, and all encompassing comfort. The controlled stretch creates a supportive fit that helps to minimize the fatiguing effects of road vibration and muscle vibration. Additionally, it allows Castelli to construct a jersey that fits your form so that chafing from fabric bunching are minimized. Prosecco Strada is a lightweight knit that feels light and airy against the skin, while remaining highly breathable. It wicks moisture away to keep you dry and help to regulate your body temperature. Stretch mesh side panels have also been incorporated so that the jersey moves with you as you ride. Set in sleeves conform to your shoulders to minimize fabric bunching, and a silicone coated elastic hem keeps the jersey in place. A full length zipper makes the jersey easy to dump heat, and three back pockets hold all of your riding essentials. The Castelli Velocissimo Tour Full Zip Jersey Short Sleeve Men's is available in sizes Small to XXX Large and in the colors Whiteblackred, Blackwhiteyellow fluo, and Drive Blueblackwhite.