For backpacking or mountaineering, the Osprey Volt 60 has the essential features you demand, in an internal frame pack, with a versatile fit and incredible value. AirScape backpanel provides ventilation and the easy to adjust harness fits different torso lengths. 3.5mm LightWire peripheral frame effectively transfers the load from harness to hipbelt. 1mm HDPE framesheet spreads the load across the entire backpanel to the peripheral frame. AirScape backpanel features mesh covered ridged foam that allows maximum ventilation while keeping the load close to the body. Soft, edgeless Spacer Mesh padded mesh offers a soft breathable contact surface and large load support. Adjustable sternum strap with rescue whistle. Spacer Mesh Fit On The Fly adjustable hipbelt for a comfortable carry, with soft, edgeless padded mesh for a soft, breathable contact surface stiffened internal structure for large load support. Harness is easily adjusted to an extended range to fit specific torso lengths. Floating top pocket with web attachment points. Zippered hipbelt pockets. Top lid zippered pocket. Under lid zippered mesh pocket. Large stretch mesh front pocket. Dual front panel daisy chains. Dual ice tool loops. Zippered sleeping bag compartment with removable divider. Removable sleeping pad straps. Dual upper and lower side compression straps. Stow on the Go trekking pole attachment. Dual access stretch mesh side pockets. Internal hydration sleeve. 210D nylon Double Diamond Ripstop fabric with 600D packcloth accent and bottom. Fits torso lengths 17 22 43cm 56cm. Hipbelt Range: 29 51 75cm 130cm. Volume: 3661 cu. in. 60 liters. Wt. 3.92 lbs. 1.78 kilograms. Size: 33Hx14Wx12D 85Hx36Wx30D cm. Load range: 30 50 lbs. 14 23 kg.