Black Diamond Quantum 55 L

The Quantum, part of Black Diamond’s Ultra Series, is designed for “when weight and speed matter most.” With a modular V-Flex suspension and removable V-Flex stay, the Quantum is engineered to haul large loads when accessing climbs or cleaning camps. In steep terrain or for summit pushes it can be stripped down to a two-pound (900 grams) climbing pack.

The Quantum features a 20 mm thick, dual-density waistbelt, cut to allow high steps through boulder fields and glacial debris. The waistbelt, with Ice Clipper slots, is easily removed for access to a harness or gear loops. Dual-density shoulder straps, 15 mm thick, are cut to provide a full range of motion. The hydration-compatible pack has a removable top lid with helmet holder, side-panel zipper access, crampon pocket, ski slots, removable bivy pad, and ice tool PickPockets. The retractable rope strap can carry several lengths of fixed ropes or two dynamic ropes, side compression straps fit sleeping pads or an alpine tent, and upper ax loops double as emergency haul loops when used with the grab loop. The Quantum comes in three sizes: 65 L, 55 L, and 45 L.

Capacity
65 liters: 3967 cubic inches
55 liters: 3357 cubic inches
45 liters: 2746 cubic inches

Weight
65 liters: 3 lbs 13 oz (1.74 kg); stripped: 2 lbs (910 g)
55 liters: 3 lbs 8 oz (1.59 kg); stripped: 1 lb 14 oz (860 g)
45 liters: 3 lbs 7 oz (1.47); stripped: 1 lb 13 oz (820 g)