Mammut Men's Stratus Vest:
Lightweight and low profile, the Mammut Stratus Vest for men keeps your core warm during active pursuits. Incredible, as it packs down to the size of an orange, it's featherweight doesn't diminish it's 60g micro thermal insulating qualities. Adding versatility and extra protection in the cold, this vest nests nicely in layers with another insulating piece. With one-hand adjustable collar, 2-way front zip, adjustable hem, and two side pockets, the Stratus Vest is stowable in its own pocket and conveniently clips to your harness.