Castelli DO.DI.CI. Short Sleeve Cycling Jacket With Castelli’s advanced Ristretto technology providing 12 times the air permeability of previous Gabba designs, the Castelli DO.DI.CI. Short Sleeve Cycling Jacket keeps you drier, fresher and more comfortable when you’re pushing the pace. The DO.DI.CI. Short Sleeve Jacket blurs the line between a lightweight jersey and a protective jacket. Castelli’s engineered air permeability lets in just enough airflow to efficiently evaporate sweat while still blocking the chill. Its close-to-body stretch fit ensures a streamlined silhouette without feeling restrictive, and the minimalist construction enhances both comfort and aerodynamics. Whether you’re climbing hard or cruising tempo, this jacket adapts seamlessly to the demands of fast, cool-weather riding. Every detail reflects Castelli’s performance-driven design ethos: a smooth-operating YKK® Vislon® zip for easy ventilation, three practical rear pockets for essentials, and reflective piping for added visibility in low light. Developed in partnership with fabric specialist ITTTAI®, the DO.DI.CI. features an exclusive material with exceptional stretch, breathability and water protection. For riders seeking the ultimate cool-weather short-sleeve layer, the Castelli DO.DI.CI. sets a new benchmark.