As the ultimate blend of light weight and load-carrying ability in a technical alpine pack, the Black Diamond Quantum pack comfortably hauls heavy loads using our new fully modular V-Flex suspension system. Cushy 15-mm foam is used in the ergonomically-curved shoulder straps and 20 mm in the waistbelt with an additional 3 mm of 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, lose the V-Flex suspension, top lid, waistbelt and crampon straps. A lightweight, nylon waistbelt is included. Specs: Weight: 1.94 kg (4 lb 5 oz) Stripped Weight: 1.02 kg (2 lb 4 oz) Volume: 65 Liters (3967 cu in) Torso Size: S/M (16–19 in), M/L (18.5–21.5 in)