Castelli Aero Race 8S Jersey More than a decade of speed innovation, refined. When Castelli pioneered the aero road jersey in 2006, the peloton scoffed. Now everyone wears one. The Aero Race 8S represents the latest - and fastest - chapter in that story, with CFD-engineered sleeve construction that places seams for optimal aerodynamic performance and an engineered ribbed shoulder fabric developed specifically to reduce drag at race speeds, delivering up to 6% savings in Cd A over previous aero jerseys. The "S" stands for speed, and the rest of the jersey backs it up - smooth, stretchy body fabric sits perfectly against the skin, an elastic waistband keeps everything in place under load, and three rear pockets handle whatever you need to carry. This is the jersey for riders who understand that what you wear is almost as important as how you train. Features CFD-engineered sleeve construction with optimized seam placement for maximum aerodynamic performance at race speeds Engineered ribbed shoulder fabric designed specifically to reduce aerodynamic drag, with up to 6% savings in Cd A over previous aero jerseys Smooth, stretchy body fabric provides a perfect fit and comfortable next-to-skin feel throughout long race days Elastic waistband keeps the jersey locked in position and supports loaded rear pockets Three rear pockets for race-day essentials SPECIFICATIONSSleeve Length Short Closure Type Full-zip Fit Race Fit Intended Use Road, Road Race Sizing Size XSSMLXL2XL3XLChest (in)34. 5"36"37. 5"39"41"43"45"Chest (cm)88cm92cm96cm100cm105cm110cm115cm Waist (in)30"31"33"34. 5"36. 5"38. 5"40. 5"Waist (cm)76cm80cm84cm88cm93cm98cm103cm Castelli Sizing Note:Castelli products are aggressively cut and are intended to fit optimally in the riding position. If you are in-between sizes, you may want to size up as the fit may be very form-fitting. If you have questions, please contact our Gear Advisors. | Castelli | Castellli Aero Race 8S Jersey Men's | Size Small In Azzurro Italia