Be prepared for anything the next time you face a trail run on a sultry summer day with the Trail Wind Hoody from Marmot. The entire jacket weighs all of 4 ounces and stows away easily, but when afternoon thunderstorms threaten, pull it out - the DWR coating and hood shield you from precip, active venting allows you to stay cool, and Angel-Wing Movement allows you to use a fuller range of motion.