The Arc'teryx Women's Atom AR Hooded Insulated Jacket is ready for peak bagging missions and weekends in the wilderness with its toasty Coreloft insulation, durable Gossamera shell, and insulated, helmet compatible StormHood. Wear it as a standalone piece in cold, dry weather or use it as a warm mid layer in wetter conditions. Treated with a Durable Water Repellant, the jacket's outer shell repels light precipitation when you're caught in an unexpected rain or snow shower. Synthetic Coreloft insulation throughout the body, arms, and hood provides excellent loft for heat trapping performance, and its lightweight, highly compressible nature allows it to stash easily inside a pack. In addition, the jacket's athletic fit, adjustable hem drawcord, and stretch cuffs conform to your body when you're engaging in fast paced activities.