Engineered for high-output rides and unpredictable weather, the Men's Pi PRO/BLACK Wind Vest strikes the perfect balance between protection and precision. Built from an ultra-packable stretch-woven fabric, our lightest vest ever is designed to move with you—not against you—when the tempo rises. A wind-blocking front panel cuts the chill, while a lightweight Italian mesh back regulates airflow and prevents overheating. The race-calibrated fit eliminates bulk and drag, with a two-way YKK® zipper providing quick venting and mid-ride access to jersey pockets. Finished with PFAS-free PI Dry® water repellency, GoFresh™ anti-odor technology, and BioViz® reflectivity for low-light visibility. It's the layer you forget about—until you need it most.