Slide into the Castelli Opera Wool Long-Sleeve Women's Jersey, and let the blend of merino wool work its natural temperature-regulating magic. When the sun hides behind clouds, wool inherently retains heat thanks to ultra-small air pockets—yet, when the sun decides to burn off the cloud cover, thus heating up the blacktop, perspiration and excess heat are transferred away from the body . Ride without worrying about comfort or temperature changes, or about being seen in a gaudy, long-sleeve, road-racer jersey.

• Merino wool has antibacterial properties to reduce odors
• Multi-panel form fit cuts through wind while providing full coverage, and freedom of movement
• Washable blend of merino wool and fine-gauge acrylic for ease of maintenance
• The 8-inch front zip allows further temperature regulation
• Three rear pockets for essential gear