When you're on the move in cold weather, stay warm--but not too warm--in the Rab Men's Alpha Direct Insulated Jacket. Designed to be used as either an outer layer or a mid-layer, it takes advantage of Polartec Alpha Direct technology to keep you warm while offering unmatched breathability, so you stay comfortable through a wide range of temperatures. Alpha Direct insulation eliminates the need for a liner fabric, so you get more unimpeded airflow (not to mention less weight and bulk) without sacrificing warmth. A water-resistant outer fabric makes short work of light rain and snow, and the slim fit allows you to comfortably wear this jacket underneath a technical shell when the weather is extra rough.