The Black Diamond Cirrus is as minimal as it gets, weighing in at just 1 ounce, and slays the competition for the lightest pack on the market. Built from super light fabric and featuring our innovative Splice Adjust shoulder straps, this accessory pack stuffs into a pouch the size of an egg and is always ready for action, whether you're packing it for travel, or stowing it in your climbing pack for those unplanned additions of kit.