Roll out in streamlined style on brisk days with the Castelli women's Illumina Long Sleeve Jersey. Made from Riga 3D fabric, this jersey features a cozy, brushed lining for warmth and a rib-knit outer surfacing for a bit of textural flair. Castelli adds panels of wind-blocking Voile Whisper fabric across the upper chest and shoulders. The material's contrasting finish isn't just for looks — it also resists wind to protect your body's microclimate.

As with all things Castelli, the construction and attention to detail are impeccable, with patterning designed to sit close against the skin and minimize bunching and flapping fabric when in the saddle. The Illumina features one angled, zippered pocket in the front and three rear pockets, providing ample space to securely hold keys, a phone, snacks, and other ride necessities. Reflective tabs integrated into the rear pocket seams increase visibility to motorists and other road users in low-light and dreary conditions.