Giro Chrono Short Sleeve Base Layer X-Small/Small CharcoalThe Giro Chrono Short Sleeve Base Layer takes into consideration that the temperature regulation and moisture management are critical to your performance and comfort during a ride. Built from our proprietary Wikpro fabric with a seamless body design, when it comes to fit and performance. Wikpro is a performance-engineered blend of polypropylene and nylon knit that offers amazing moisture transfer and breathability with an incredibly soft feel against the skin, plus exceptional stretch and rebound for a second-skin-like fit. Once you try it, you won't want to ride without it. Available in Charcoal and White.768686315282