The Outdoor Research Men's Ascendant Jacket is a lightweight active layer that helps regulate body temperature during high-output outdoor pursuits. Featuring stretchy Pertex; Microlight Softshell fabric, this jacket offers freedom of movement, abrasion-resistance, and allows your Insulation to stay properly lofted. The woven Polartec; Alpha Insulation efficiently traps body heat while maintaining exceptional breathability to keep chill-inducing sweat off your skin. Wear it hiking, backpacking, skiing, ice climbing, or snowshoeing. The slim fit and low-profile design layers well with other pieces and won't bunch up while on the move.