Osprey Atmos AG 65 Backpack L/XL - BlackFor heavyweight weekends or weeklong backpacking trips where comfort and ventilation are paramount, people know to reach for the Atmos AG 65. You'll forget how much you really packed with its AntiGravity suspension, delivering an incredible fit that seamlessly envelopes your back and hips in 3D suspended mesh. From easy to use stretch mesh side pockets for water bottles, an internal reservoir sleeve for additional hydration opportunity, Stow on the Go