Rook 50 features a highly-adjustable ventilated backsystem, utilising AirSpeed suspended mesh over a large airflow cavity. This allows the body to sink into the hipbelt and lumbar area of the pack, greatly enhancing overall comfort and providing a very stable and supportive load-carry. The torso length adjustment is very intuitive, utilising an innovative ladder-lock system. Rook 50 can be quickly and easily adjusted to fit perfectly. To fit a wider variety of torso-lengths, these packs come complete with dual load-lifter points on the upper frame, ensuring that the harness will remain comfortable in whichever position it’s placed. A large, highly padded hipbelt provides a very comfortable fit and aids in carrying heavier loads in the pack.Rook features all of the essentials for multi-day backpacking trips; a large capacity with upper lid and lower sleeping-bag compartment access points. An internal divider provides a separated lower compartment which can be unfastened when not in use. Multiple compression straps allow the pack to remain stable, while not interfering with the mesh water-bottle pockets. Dual hipbelt pockets and a large top-lid pocket with key-clip provide easy access to smaller equipment.Should you feel the need, Rook is compatible with Osprey’s Daylite daypacks, allowing you to attach the smaller pack onto the bigger pack, expanding the capacity and providing an option for when you leave your big pack at the camp and take a shorter trip with your daypack.