Giordana Size Chart The Sosta Vest has a triple layer polyester/spandex face with a windproof, water resistant membrane bonded together with a Merino wool lining. The front of the vest has an additional mesh lining to allow air to circulate. A Merino wool blended interior collar keeps wind and cold at bay. Cycling specific features include two vertical rear zippers that double as access points for the rear pockets of a jersey worn beneath and can be used as vents to regulate temperature and airflow through the vest. A reflective Giordana logo strategically placed on the rear pocket remains subtle in natural light yet becomes highly visible when illuminated. Features: - Triple layer construction with a 100% breathable wind and waterproof membrane DWR treated outer membrane - Merino wool interior lining - Ergo collar forms to protect the neck - Two rear zippers double as access for jersey pockets underneath or to regulate temperature and airflow - Large tooth zipper - Reflective Giordana logo above the pocket