When an unexpected downpour hits or you're facing all-day rain, the ultralight Emergency packable jacket from Castelli delivers complete protection without weighing you down. Premium 3-layer Deluge fabric (20,000mm waterproof), fully taped seams and a waterproof zipper lock out rain while staying breathable. Engineered with a high neck and dropped tail to shield you from spray, with windproof panels to block chill. The performance stretch fit of this jacket moves with you, and the soft knit polyester lining feels comfortable against skin. 360° reflectivity boosts visibility, making it ideal for commuters. Pack it in your jersey pocket or in a bikepacking bag for touring— at 189g, it’s barely noticeable. This is Italian-engineered rain protection—minimal weight, maximum defense. Athletic fit.