The Starfire Women's Hooded Rain Jacket features Marmot's comfortable and breathable Nanopro Membrain 3-Layer waterproofing technology. Nanopro Membrain coating is comprised of densely packed pores small enough to keep water droplets from getting in, but big enough to let water vapor out—providing cool, dry comfort even as your activity level increases. The Starfire also features fully taped seams to prevent leaks and an adjustable hood with a moldable brim to keep raindrops away from your face and eyes. If the interior heat should begin to build up, simply open the water-resistant Pitzips—zippered ventilation openings under the arms—to increase air flow. Your arms will retain full mobility through it all, thanks to the built-in Angel-Wing Movement.