Nike Impossibly Light Womens Running Jacket (Small, Black/White/Reflective Silver) Nylon ripstop fabric with acrylic backing provides lightweight wind and water resistance. Packs into the hood pocket that's equipped with a bungee for easy carrying while you run. Hood provides coverage that wont limit visibility while running. Front pocket. Raglan sleeves for natural range of motion.Reflective elements stand out in low light. Bonded seams enhance durability. Stretch cuffs and adjustable hem for a personalized fit.