Product InformationVersatile, breathable, and packable, this is an ultralight version of RAB's definitive synthetic insulation for high energy ascents. Wear as a technical outer for fair-weather objectives or a warm midlayer when the mercury drops, it features a new, improved, even more breathable lining, designed to regulate your temperature and keep you comfortable for longer. Adapting with ease to changeable temperatures and energy levels, it is active insulation crafted to be kept on all day, however fast youre moving and in any weather. Rab Men's Xenair Light Jacket - Light Khaki - Small