It''s all in the fit.
It''s simple: the comfier the backpack, the comfier the hike to camp, and the comfiest backpack is the one that fits best. The Atmos AG 65 Backpack is Osprey''s best-fitting, most ventilated, and comfiest option for multi-day treks. Multiple adjustments running vertically and horizontally place the padded shoulder straps and suspended mesh back panel right where you want them, and the padded Fit-on-the-Fly waist belt lets you buckle, cinch, and go without hassling with a bunch of micro-adjustments.
Osprey's best-fitting backpack for multi-day treks
65L capacity suitable for multi-day or weeklong adventures
Anti-Gravity suspension is well-ventilated and cushioned
Shoulders adjust up and down back panel for a custom fit
Fit-On-The-Fly waist belt ensures a quick-and-easy fit
Removable FlapJacket top lid minimizes weight and acts as a daypack
Internal sleeve accommodates 3L hydration reservoirs
Bottom sleeping bag compartment and removable sleeping pad straps
Item #OSP00AL

Material[main] 100D x 630D nylon dobby [accent] 210D high tenacity nylon [bottom] 420HD nylon packcloth
Volume[small] 62L (3783cu in) [medium] 65L (3967cu in) [large] 4150cu in
Support/SuspensionAnti-Gravity suspended mesh, LightWire tensioned frame, ExoForm wrap upper
Shoulder StrapsAnti-Gravity mesh
Waist BeltFit-On-The-Fly
Hydration Compatibleinternal sleeve (3L capacity)
Reservoir Includedno
Accesstop
Pockets2 side, 1 zippered top, 2 zippered waist belt, 1 front mesh
Ice Axe Carrydual
Trekking Pole CarryStow-on-the-Go
Sleeping Bag Compartmentbottom
Compressionside
Weight Capacity30 - 50lb
Dimensions[small] 32.28 x 15.35 x 16.14in [medium] 34.25 x 15.35 x 16.14in [large] 36.22 x 15.35 x 16.14in
Claimed Weight[small] 4lb 6oz [medium] 4lb 7oz [large] 4lb 8oz
Recommended Usebackpacking
Manufacturer Warrantylifetime