The Prologo VI Jersey from Castelli combines its classic design with technical innovation to create a breathable, quick-drying jersey with a fit that will leave you inspired to ride. For the Prologo VI, Castelli used its new light and breathable Punto fabric that's remarkably soft yet stretchy and features bioceramic nanoparticles added to the fused polymer, which reflect infrared light to protect you from the sun and help keep your body warm when needed. The jersey possesses good horizontal stretch for a great fit, with limited vertical stretch to support the pockets.To further improve breathability, the Prologo has a full-length, covered YKK Camlock zipper so you can dump heat on the fly. The Prologo also hauls all of your riding essentials with its three rear pockets right above its drop tail with internal silicone waist gripper to keep the jersey in place. Lastly, reflective piping keeps you more visible if the sun hasn't risen yet or already called it a day.