Injection-molded die-cut foam AirScape backpanel. AirScape creates a close-to-body fit. BioStretch harness and hipbelt with continuous lumbar-to-hipbelt wrap. Lightweight with optimal stability for dynamic movement. Built to accommodate the needs of hikers bikers and more. Tuck-away ice ax attachment and bungee tie-off. Stow-on-the-Go trekking pole attachment. LidLock bike helmet attachment. Adjustable sternum strap. Multiple pockets for organization. Made of bluesign-approved recycled nylon. Load range: 10-20lbs. 21.65L Capacity.