The CannondaleGarmin Fawesome 2 Vest adds to Castelli's long history of quality cycling clothing. This lightweight vest allows you to rock the argyle green in support of your favorite pro team while braving chilly weather with style. The front and shoulders of the vest are made of Windstopper X Lite Plus fabric to protect you from wind and drizzle. This windproof and water repellent fabric's 4 way stretch enables a fit that moves with you in different positions on the bike. No uncomfortable pulling. It's also breathable to keep you comfy and dry as you rack up the miles. The back of the vest is made of Nano Flex Light fabric, a thermally insulating and flexible fabric with a nanofilament coating for water resistance to protect riders from wheel spray. Additionally, Nano Flex Light's breathability facilitates increased temperature regulation while maintaining the Fawesome 2's windstopping functionality. Castelli also pays attention to the little details. Rear reflective trim increases visibility to motorists in low light conditions, and a full length zipper with wind flap keeps the entire front of the vest windproof. The CannondaleGarmin Fawesome 2 Vest's packable construction also allows it to stow easily in a jersey pocket for those days when it just might be a good idea to bring a vest along for the ride.