The Women\'s ThermoBall Gordon Lyons Hoodie from The North Face is a highly versatile all-weather jacket that boasts Primaloft ThermoBall insulation in key areas; the chest, the hood and the shoulder panels, to ensure you maintain a comfortable temperature throughout the day\'s adventure. Ideal as a midlayer in mild conditions when out hiking, particularly with a rucksack, it is light enough to leave in your pack until you need it but breathable enough to wear all day without overheating, depending on your level of activity.