What Our Gearhead(R) Experts Are Saying: "This is the jersey I grab when speed is the priority. The Speed Sleeves feel noticeably smoother in the wind, and the mesh body keeps airflow high on hard efforts. It fits like a second skin without feeling restrictive, especially when you're fully committed to race pace." When we're lining up for fast group rides or race-day efforts, the PEARL iZUMi PI Black Mesh Short-Sleeve Jersey is the one we trust to keep drag low and speed high. Designed with aerodynamics at the forefront, it delivers a locked-in, race-ready feel that rewards powerful riding and aggressive positioning on the bike. P. R. O. Transfer Mesh fabric across the main body maximizes breathability and moisture management, keeping airflow moving when the intensity ramps up. In key leading-edge zones, P. R. O. Aero fabric pairs with patented anatomic Speed Sleeve construction to reduce aerodynamic drag, with extended sleeves smoothing airflow around the upper arms. Finished with a full-length zipper and structured rear pockets, this jersey is built for riders chasing marginal gains where they matter most.