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Osprey Packs
Atmos AG LT 50L Pack

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Size Chart


Why We Like The Osprey Atmos AG LT 50L Pack

Light and streamlined, the Osprey Atmos AG LT 50L Pack keeps us moving quick on multi-day backcountry ventures. Osprey's AG system seamlessly integrates the hip belt with the tensioned back panel and the peripheral frame to give us optimal load transfer and a made-for-us fit, while the spacer mesh and die-cut foam ensure a breezy, comfy carry. The side zip access lets us grab layers or snacks buried inside without needing to unclip the floating lid, while the integrated rain cover unfurls in a cinch when the weather turns.


  • Pared-down pack for minimalist-minded backpackers
  • 50L capacity for multi-day ventures on trail
  • Recycled material provides eco-friendly durability
  • Water-repellent finish fends off light precipitation
  • Adjustable torso to provide the best fit for you
  • Suspended mesh back panel to always feel the breeze
  • Quick-cinch hip belt to make adjustments on the move
  • Multiple pockets and lash points for organizing gear
  • Item #OSPZ1FV
Responsible Collection
[face fabric, bottom] bluesign® APPROVED, Recycled/Repurposed
[face fabric] 210D recycled nylon, PFAS-free DWR treatment, [bottom] 500D recycled high-tenacity nylon, PFAS-free DWR treatment
[small/medium] 50L (3051cu in), [large/x-large] 53L (3234cu in)
AntiGravity back panel (two-tone seamless suspended spacer mesh, silicone lumbar print), 4mm powder-coated full-peripheral frame, injection-molded ladder torso adjustment
Shoulder Straps
AntiGravity harness (die-cut foam, ExoForm mesh wrap)
Waist Belt
Fit-On-The-Fly, crossbody ErgoPull, AG system, adjustable padding
Hydration Compatible
yes, internal sleeve (with hanger clip and center-back exit port)
Reservoir Included
top, front panel
1 zippered lid, 1 front shove-it, 2 dual-access stretch mesh side, 2 zippered hip belt
Ice Axe Carry
dual loops
Rain Cover
dual upper/lower side, dual top, dual bottom (removable)
Weight Capacity
25 - 35lb
[small/medium] 32.68 x 13.78 x 11.81in, [large/x-large] 34.65 x 13.78 x 11.81in
Claimed Weight
[small/medium] 4lb, [large/x-large] 4lb 2.8oz
Manufacturer Warranty

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