The Women's Arc'teryx Atom Vest is an insulated vest for all things outdoors. When the chill whips through the lands, this packable vest is a go-to for centered warmth, right at your chest. Whether you're hiking, climbing, or touring, it boosts the heat level for high-output adventure. This lightweight option breathes to prevent overheating, stows into its chest pocket when not needed, and layers well over a base layer and under a shell.