The Perfetto RoS 2 Wind Jersey started life as a request from our pro riders: I want to wear the Gabba all the time, but sometimes it's too hot. So a somewhat lighter and more breathable Gabba became the Perfetto Light. With the fourth generation, we've also changed the name from Perfetto Light to Perfetto RoS 2 Wind Jersey. And it has become a staple in our autumn and spring wardrobes because it's so useful in so many situations ... which makes it very hard to define. In one sense it's a warmer vest, since it has the same construction as the Perfetto RoS 2 Vest but with short sleeves. In another sense it's a less warm Gabba. In another sense it's a jersey with front wind protection. Regardless of how YOU define it, you'll appreciate how it gives the right amount of protection on cool days while maintaining a high level of breathability. It makes you feel warm and protected, yet offers almost the same lightness and freedom of movement as a summer jersey. For mild days, we'll use it as a jersey over a light base layer with Seamless arm warmers. For rides in cooler or changeable conditions, we'll layer it over a jersey, with either Seamless or Nano Flex arm warmers. The "2" part of the name refers to the updates to the latest version, including a YKK® Vislon® zipper with both top and bottom openings for more adjustable ventilation. The reflectivity on the back is more visible, the three pockets hold more gear, and the extended "tail" has been reduced to make the piece more packable.