Combining modern style with proven technology The Gore Wear C5 Optiline Jersey aims to cut through the peloton. It is made from a blend of polyester and elastane which provides sufficient elasticity, a slim and comfortable fit and also promotes moisture removal keeping you dry in the desert during steep climbs. The core is designed with wind protection allowing your engine to run in cool canyons when you need to keep the heat inside and also features a full-length semi-automatic zipper for temperature reduction when summer starts to come and the mercury is approaching triple digits. range. This knit has plenty of room for your essentials.. It has three deep back pockets that can accommodate tools spare tubes and treats, as well as a zippered pocket in which you can safely hide your key and cards during a trip.