Conquer the track and the trails with the 509 Transition Jersey. 509's most technologically advanced jersey yet, it offers performance you can count on in the toughest conditions. Putting a premium on fit, it introduces FUSION sonic welded cuffs and collar for seamless comfort. Eight laser-perforated venting zones maximize cooling and four-way stretch shoulders and biceps unlock freedom like you’ve never felt before. Pair it with the 509 Ridge Pant for a pro-level kit.