The Rab Women's Infinity Windstopper Hoody is an extremely protective down insulator designed for alpine climbing. With minimal seam overlays, Gore-Tex's Windstopper fabric offers durable windproof protection at the shoulders, hood, upper sleeves, and upper body for extra protection from the elements. The rest of the jacket's exterior is windproof and more breathable to enhance the 800-fill down's loft. Rab added a fluorocarbon-free Grangers finish to the down for hydrophobic moisture protection that helps the down retain its loftiness in wet weather.