Stay warm during alpine pursuits with the Oreus Aetherm™ insulated jacket, designed to be windproof, lightweight, and packable. Mountain Equipment's Oreus is their warmest, lightest, and most compressible insulated jacket; versatile, comfortable, and resistant to moisture, it's essential kit for alpine climbers and backpackers tackling tough conditions. Pack light without sacrificing warmth or comfort - the Oreus is a game-changer. Oreus Insulated Jacket - Men's