This jersey is made for those JRA rides. Just Riding Along. You're not aiming for new Strava records or to win the city-limit sprints, but you do want a jersey that's comfortable and looks great. The jersey has a neutral cut - not racy but also not flapping in the wind. But the high-stretch micro- fabric means it fits more shapes than a Castelli race jersey. Adding to the fit and comfort are the four-way-stretch sleeves that seem to disappear, since you don't really feel them at all, right down to the raw-cut sleeve ending that never constricts. This jersey offers full sun protection: the main body is rated at UPF 50 while the sleeves are UPF 30, which means they still block 97% of damaging UV rays. Important Castelli features like the drop-pocket design, easy-sliding full-length YKK Vislon zipper, and reflective details on the back will keep this jersey in the short rotation in your wardrobe.