The Osprey Kestrel 48 Internal Frame Pack is a jack of all trades. With a separate zippered sleeping bag compartment and external sleeping pad straps, its a fully functional overnight pack. Or cinch down the StraightJacket side compression straps and take it out for a day of peak bagging in the high country. Durable, comfortable and technically advanced, this pack is ideal for multi sport enthusiasts. 3.5mm LightWire peripheral frame effectively transfers the load from harness to hip belt. Atilon framesheet spreads load across the entire backpanel to the peripheral frame. Mesh covered ridged foam allows maximum ventilation while keeping the load close to the body. Soft, edgeless padded mesh offers a soft breathable contact surface and large load support. Wide mouth access sleeping bag compartment with divider stows your bag out of the way. Side zipper access to main compartment allows easy accessibility to the inside contents of the pack. Dual zippered hipbelt pockets provide secure storage for often needed items. Full length zippered side pocket aids organization. External hydration sleeve in backpanel simplifies refilling and protects pack contents from spills. Large front stretch mesh pocket for quickly stashing extra gear. Tuck away tool loops with bungee tie offs provide secure tool carry. Dual front panel daisy chains allow for extra external attachment points. An integrated and removable raincover protects your gear from foul weather. It stows away in its own external pocket at the bottom of the pack. Upper and lower reverse StraightJacket side compression straps stabilize load and also serve as external gear carry straps. Osprey Stow on the Go system allows users to tuck away trekking poles quickly without having to remove their packs. Adjustable harness provides custom torso fit. Adjustable and removable sleeping pad straps provide secure extra carry. Adjustable sternum strap with rescue whistle.