Rain is unavoidable when you are committed to riding your bike. If you see dark skies with rain looming, the Castelli Pocket Liner Jacket is very easy to bunch up and store in the back cycling jersey pocket. As insurance against the heaviest rain, you can go out on the bicycle knowing you will be protected. Made with the eVentR fabric, the entire cycling rain jacket only weighs in at a mere 170 grams making it barely noticeable when stored in your back pocket. While extremely lightweight, you have complete water protection in a sealed fabric with sealed seams that has welded ventilation zippers. These zippers allow freshening without allowing in any wetness. Every angle of the rain jacket seals out wetness–storm-flap at the back keeps the water from intruding into your dry comfort. The zipper at the front is easy to open when you need to let in some air as your body heats up, but it is also as easy to close when you need that extra protection. Performance is not limited by the slight stretch in the Pocket Liner Jacket which keeps the rain jacket close to your skin so air flows over you without any interruption of a flappy material. The Castelli rain jacket is good for cool fall rainy day rides.