The Black Diamond Quantum 45 backpack is a masterful blend of lightweight and load-carrying ability in a technical alpine pack.

The Quantum is BD’s premier alpine/expedition pack, comfortably hauling heavy loads in the high peaks.

• Volume
• S/M: 2624 ci / 43 L
• M/L: 2746 ci / 45 L
• Weight
• S/M: 3 lb 13 oz / 1.72 kg
• M/L: 3 lb 14 oz / 1.75 kg
• Stripped Weight
• S/M: 1 lb 14 oz / 840g
• M/L: 1 lb 15 oz / 870g
• Materials
• Durable and water-shedding VX 21 Dimension Polyant laminated fabric and lightweight 30d siliconized lining fabric

Size S/M: torso length 16 to 19"
Size MD/LG: torso length 18.5" to 21.5"

Measure the length of your spine from C7 vertebra (the knobby bone at the base of your neck) to level with your iliac crest (the top of your hip bones).