Rain and wind protection on the move. The Women's North Slope Flex Jacket provides basic weather protection with extra stretch comfort. It is made from a very soft textured Texapore fabric that is also waterproof and highly breathable. It incorporates a flex panel on the back for increased wear comfort and mobility.The jacket is also equipped with a System Zip, which allows you to upgrade the jacket for winter wear. Simply zip in a compatible Jack Wolfskin inner jacket for extra insulation to create a versatile and functional winter combination .