What Our Gearhead(R) Experts Are Saying: "I wear this jersey when I want every aero advantage I can get. The Speed Sleeves feel fast at higher speeds, and the mesh body keeps me cool during hard efforts. It fits smoothly in an aggressive riding position without bunching or restriction." When speed is the goal and the pace stays high, we reach for the PEARL iZUMi PI Black Mesh Short-Sleeve Jersey. Designed with racing in mind, it delivers a sleek, aerodynamic fit that supports aggressive riding positions and fast group efforts where efficiency matters most. The streamlined feel keeps distractions low so we can stay locked into the effort. Across the main body, P. R. O. Transfer Mesh fabric maximizes airflow and moisture management to regulate temperature during intense rides. In key leading-edge areas, P. R. O. Aero fabric pairs with patented anatomic Speed Sleeve construction to reduce aerodynamic drag, while extended sleeves smooth airflow around the upper arms. Finished with a full-length zipper and supportive rear pockets, this jersey is built for riders chasing speed on every mile.