Most people buy a jacket for warmth, while some people buy it for purpose. Both of these reasons are exactly why I chose to buy my Arc’teryx Atom LT jacket. It is not only practical, but it boasts comfort and style. The Atom LT consists of a moisture-resistant outer face fabric, which is not only breathable, but insulated and lightweight. Weighing in at a low 330 g/ 11.6 oz., this mid layer is easily compressible and packable. Whether you are skiing, climbing or using it as an everyday jacket. The Atom Lt is the jacket of choice for any outdoor adventure.