As the ultimate blend of light weight and load-carrying ability in a technical alpine pack, the Quantum 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 is 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.