The Castelli Women's Promessa Short-Sleeve Jersey fuses a feminine-specific cut with active moisture management, ensuring you stay nice and cool on the hottest summer rides. Its Stratus Plus dual-layer knit fabric pulls moisture off your skin for rapid evaporation, while mesh panels channel cool(er) outside air over your underarms to combat sweat build-up and overheating. The full-length zipper helps to ventilate your core on sweltering summer rides. Other cool features include a heat-transfer Castelli logo that pops nicely against the jersey's brightly colored background, as well as three back pockets for easy storage and retrieval of water bottles and energy gels.