Designed for those who go hard and don��t look back, the 509 Race 5 Jersey was made with lightweight, stretchy, breathable mesh. FUSION sonic welded cuffs and collar offer seamless comfort, laser-perforated venting zones increase cooling while four-way stretch shoulders and biceps boost freedom of movement when you��re hunched over on the throttle. Pair it with the 509 Race 5 Pant for a pro-level kit.