Thanks to technical materials and Rab's knowhow, this jacket is warm for its weight. It is also very packable. In the category of lightweight insulated products, the Xenair Alpine Flex is on the thinner side and feels airyan excellent choice when you need a bit of insulation but can't compromise on breathability. Rab Extended Range product: In cooperation with Rab, Scandinavian Outdoor offers an extended product range. Rab Extended Range products are shipped to you directly from the manufacturer's warehouse in the Netherlands. - Snug fit: especially if between two sizes, choose the bigger one - Light but durable Pertex Quantum surface fabric - High quality PrimaLoft Gold Active+ insulation - Tall, protective collar - Two zippered lower pockets - Hem adjustment cord - Center back length 64.5 cm For the technically inclined, the surface fabric has a cfm rating of 2 and the liner fabric lies at 10. What this means is that the outer fabric boasts great wind resistance, while a more