The Castelli Gabba R Short Sleeve Jacket represents the latest evolution in Foul Weather Race Equipment, setting a new standard for protection, aerodynamics, and performance. Developed in collaboration with fabric innovator ITTTAI®, this jacket features an exclusive waterproof stretch fabric with a microporous electro-spun hydrophilic polyurethane membrane. The outer membrane eliminates the need for a textile layer, reducing water retention while maintaining lightweight breathability. With wind tunnel testing confirming it as Castelli’s fastest jacket, the Gabba R proves you don’t have to sacrifice speed for protection.

Tailored with a race fit and long, close-fitting sleeves, the Gabba R moves with you while cutting through the air. The fabric offers extreme four-way stretch and breathability, aided by an inner layer of polyester and elastane. A YKK® Vislon® waterproof zipper keeps water out, while three mesh rear pockets allow for drainage in wet conditions. The drop tail provides coverage from road spray and features a reflective stripe for added visibility. Weighing just 167g and built for temperatures between 10°C and 18°C (50°F to 64°F), the Gabba R is the go-to short sleeve jacket for racers and serious riders who demand top-tier performance in challenging weather. Plus, it’s fully PFAS-free for a lower environmental impact.