All-new Aether backpacks feature Osprey's best systems so everyone can travel comfortably over difficult terrain and the Aether 65 backpack is the largest in this line. Model Aether 65 designed for week-long trips and weekends, is a good choice no matter whether we are carrying heavier loads or enough gear for the night. The back of the body is vertically adjustable to customize the fit for any size and on-the-fly shoulder strap and waist belt adjustments allow for quick and easy micro-adjustments which we can record on the route. Osprey not only has a built-in rain cover but also treated the main fabric with DWR in case if you don't put the case on in time. Light Wire frame provides amazingly stiff rigidity while keeping the backpack lightweight while Airscape mesh provides breathable back ventilation.