What Our Gearhead(R) Experts Are Saying: "I wore the Climber's A/C Jersey through a summer century when temps hit the high 90s, and the Flusso 3D fabric on the front kept me noticeably cooler than my usual kit. The rear pockets held all my food without sagging, even fully loaded on long climbs."The Castelli Climber's A/C Jersey is built for the training rides where the heat becomes its own obstacle, the kind of summer day where staying cool matters as much as staying fast. Flusso 3D fabric up front and StradaPro 3D on the back work together to move air and dry quickly, so the miles keep coming even as the temperature climbs. Airflow shoulder construction and elbow length stretch sleeves with raw cut edges keep the fit close and quick, cut with the same technology found in modern race kit. Rear pockets hold everything needed for a long ride or race, from food to a spare layer, while elastic at the waist keeps everything in place through hard efforts and fast descents. A YKK(R) Vislon(R) zipper opens easily when extra cooling is needed, and more than 90% UV protection on the back means sun exposure is one less thing to think about.