Be sure to buy several, because the Castelli Sfida Jersey FZ is so comfortable and versatile, you'll want one for every cool ride. Warmer fabric, with new Warmer X-Stretch on arms, is just warm enough to not overheat you, and breathable enough for almost any season. The jersey features a close European fit and can be worn either by itself or with a base layer, vest or jacket as the temperature drops. Count on Castelli essentials like three rear pockets, reflective elements, a full-length zipper, and silicone gripper on the waist to keep the jersey from riding up. Recommended for temperatures between 59°F and 68°F.