Black Diamond Quantum 55 L

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Description

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)

Here's what other sites are saying:

From Backcountry.com:
"Black Diamond designed the Quantum 55 Pack to provide alpine and expedition climbers with a streamlined and durable pack that can be stripped down for light-and-fast summit pushes. The Quantum's padded V-Flex suspension system keeps you comfortable on long, steep approaches, and slides out for an emergency bivy pad when you get stuck on the mountain. The reinforced crampon patch straps down your spikes on the hike to the falls, and the waistbelt, lid, and straps come off, shaving over a pound for when you need to go as light as possible."

From Oregon Mountain Community:
"The ultimate blend of light weight and load-carrying ability in a technical alpine pack, the Black Diamond Quantum 55 comfortably hauls heavy loads in the high peaks using our fully modular V-Flex suspension system that conforms to your back. Cushy 15 mm foam is used in the ergonomically-curved shoulder straps and 14 mm in the waistbelt with additional, stiffer foam added on pressure points for weight distribution. It’s built with ultralight, durable and water-shedding VX 21 Dimension Polyant laminated fabric and lined with lightweight 30d SilNylon. For summit pushes, alpinists can minimize the Quantum by removing the V-Flex suspension, top lid, waistbelt and crampon straps. Additional lightweight, webbing waistbelt included. Black Diamond Quantum 55 Features: Cushy 15 mm foam shoulder harness 14mm foam waist belt V-Flex suspension Additional lightweight, webbing waistbelt included Materials: VX 21 Dimension Polyant Exterior Lined with lightweight 30d SilNylon Compare Pack Specs. Best viewed in 1280x1024 Click to enlarge"

From Moosejaw:
"Free Shipping. Black Diamond 55 L Quantum Pack (Fall 2009) The Quantum Pack by Black Diamond has been exhaustively engineered to create a new level of performance in the big mountains. When hauling large loads to access climbs or cleaning camps, the modular V-Flex suspension provides the carrying comfort and performance of a backpacking pack. In steep terrain or for summit pushes it can be stripped down to a mere 900 grams (two pounds), making it a uncompromised climbing pack. Dual-density shoulder straps are a supportive 15 mm thick and cut to provide full range of motion, maximizing comfort when using the pack without a waistbelt. The dual-density 20 mm thick removeable waistbelt is cut to allow high steps through boulder fields and glacial debris, yet effectively distributes the pack load so it is carried on the hips. It is easily removed to clear your waist for access to your harness and gear loops. Other features include side-panel zip for quick access to thermos or mittens, and crampon straps are replaceable. A rope strap can carry several lengths of fixed ropes or two dynamic ropes and side compression straps fit sleeping pads or an alpine tent. Comes with removeable bivy pad. Hydration compatible. The upper axe loops double as emergency haul loops when used with grab loop.Size: 55 L: L/XL fits torso lengths 51-58 cm (20-23 in); 55 L: S/M fits torso lengths 43-51 cm (17-20 in) Stock Weight: 55 L: 1.59 kg (3 lb 8 oz) estimated Stripped Weight: 55 L: 860 g (1 lb 14 oz) estimated Volume: 55 L (3,357 cu in) Materials: Durable and water-shedding VX 21 Dimension Polyant laminated fabric and lightweight 30d siliconized lining fabricSuspension: V-Flex Suspension Features: Removable bivy pad, removable waistbelt with minimalist 3.8 cm (1.5") webbing, removable V-Flex stay Removable top lid with helmet holder in lid Side-panel zipper access Ice tool PickPockets Crampon pocket Ski slots Retractable rope strap Hydration compatible-slot, pouch, tube guide and clip Ice Clipper slots on the waistbelt and three-point emergency haul system"

From REI:
"Loaded with features to appease the most discerning climber, the Black Diamond Quantum 55 is a premier alpine/expedition pack. Constructed of ultralight, durable and water-shedding VX21 Dimension Polyant fabric (a laminated nylon fabric) and lined with siliconized nylon lining. Top-loading design with a side zipper makes accessing gear quick and easy; top lid pocket is removable. Designed with summit pushes in mind, the removable V-Flex suspension system (with bivy pad) features dual-density shoulder straps and a removable hipbelt. Removable foam bivy pad is neatly stowed between the framesheet and backpanel for easy access when you're ready for a rest. Y-rod aluminum stay and thermoformed backpanel, shoulder straps and hipbelt comfortably support heavy loads. Load-lifter straps and sternum strap dial in the fit and add stability, helping to keep shoulder straps ideally positioned. Accessory loops are streamlined and extremely tough, making them perfect for attaching ice and snow gear. External crampon patch and straps allow easy storage of crampons. Side compression straps and multiple exterior attachment points for ice tools, pickets and trekking poles round out the features. Internal pocket holds hydration reservoir (sold separately) for hydration on the go."