The Osprey Rook 50L Backpack - Men's is a durable pack for three to five days on the trail. Carry everything necessary in this simply designed pack for backpacking. The AirSpeed Suspension features a 4mm LightWire frame, which transfers loads of 25-35 pounds away from the harness and to the hipbelt. The 3D-tensioned mesh backpanel and spacer mesh-covered padded harness and hipbelt deliver comfort. Inside, a floating divider separates the sleeping bag from the rest of the gear, and an integrated rain cover is deployable whenever the clouds roll in and unleash rain.