Our closest fitting packable waterproof rain jacket stands up to the elements without slowing you down. The lightweight PRO Aero WxB Jacket is both waterproof and highly breathable, with a contoured race fit in the sleeves and torso area so it wont flap in the wind. Tuck it in your jersey pocket and you'll be prepared for anything Mother Nature throws at youHighly breathable waterproof 10k/30k 2.5 layer membrane with charcoal backing printExtended tail for weather protection, but cut high at the front for unrestricted pedalingPre-shaped sleeves, cuffs and collar all built for the riding positionPatent-Pending anatomic Speed Sleeve constructionWaterproof front zipperBioViz™ reflective elements and high visibility colorsFully sealed seamsForm FitWeather forecast: Cold with heavy rainTemperature rating: 5 degreesFabrics: 100% polyester woven twill