Pack Cirque 22 Ski Vest. Black Diamond Cirque 22 Ski vest is the perfect skiing backpack.. The Cirque 22 Ski Vest combines the functionality of the time-tested ski packs with the on-the-go features of skimo and ultra-running packs. From pre-work dawn patrols to long fast objectives, the Cirque Vest keeps all the essentials close at hand while remaining sleek and unobtrusive. Features like the diagonal ski carry and crampon/skin pocket mean the vest stays on during transitions. At 22 liters, the vest can be configured as a single compartment or divided from top to bottom. Removable diagonal ski carry and helmet carry further allow customization for the objective at hand. A perfect companion to the Cirque skis, this pack is the backcountry skiers who want to move fast and light in the mountains.