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Osprey Atmos AG 50 (LG) Rucksack

Retail Price £170.00Was £153.00SAVE20%

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Large, light, strong and very comfortable - a pack that makes trekking less of a trial.


Osprey's ground-breaking Atmos AG Rucksack has been designed to keep you cool and comfortable if you're carrying a heavy load - fill it to the max and it’ll feel practically weightless on your back.

Their unique suspended AntiGravity™ backsystem, ExoForm™ Biostretch™ harness, load lifter bar and the Fit-on-the-Fly™ hipbelt all come together to make sure you're well ventilated and unburdened, even with a full pack of kit.

AntiGravity™ 3D suspended mesh backpanel/hipbelt - its seamless mesh and 3D cavity backpanel gives you unrivalled ventilation and comfort, with excellent load-carrying performance

FlapJacket™ top cover (for use when lid is removed) - provides protection, compression and extra head clearance

Stow-on-the-Go™ lets you stash your trekking poles quickly and conveniently without removing your pack

Fit-on-the-Fly™ adjustable hook and loop hipbelt - lets you adapt the pack to your size, to give you the best fit

InsideOut™ compression provides impressive load support, reducing fatigue so you can push your adventures harder and longer.

Add to all that the Atmos Ag's multiple entry points, Stow-on-the-Go™ trekking pole attachment, large sleeping bag base compartment and the (integrated, detachable) raincover in the (removeable) lid and you've got a pack that will serve you well whatever your journey.

“A great pack, not just for warm climates” - Outdoor Magazine: Editors’ Choice 2015

  • ExoForm™/BioStretch™ harness with load lifter 'bar'
  • Adjustable AirSpeed™ trampoline suspended mesh backsystem
  • Sternum strap with emergency whistle
  • Top lid access
  • Stretch front pocket, twin zippered hip belt pockets
  • Twin ice axe loops
  • Integrated & detachable raincover
  • Sleeping bag base compartment with internal divider
  • Compatible with Hydraulics™ Reservoir
  • Base zip entry
  • Internal top load compression strap
  • Light weight peripheral frame
  • Lower compression converts into sleeping pad straps
  • Stretch mesh side pockets  




Weight (g): 1850, 1990
Volume (L): 50
Dimensions (cm): 80 x 35 x 40
Fabric: 100x630D Nylon
Gender: Unisex
Pack Features: Gear Loops, Hipbelt, Hydration Compatible, Laptop Sleeve, Raincover, Waterproof
Recommended Use: Expedition



If you are unable to use Osprey's pack sizing app, then measure yourself by following these steps:

1. Locate your C7 vertebrae  (the bony bump at the base of your neck, where the slope of your shoulder meets your neck) - tilt your head forward to locate it more easily

2. Place your hands on the very top of your hips so you can feel your iliac crest, which creates your ""hip shelf""

3. Measure the length between the C7 vertebrae and the iliac crest, making sure to follow the contours of your spine.

Based on your measurement, select the size which you best fall into:



Osprey Atmos AG 50 (LG) Rucksack
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At GO Outdoors we offer a wide range of delivery options to suit your needs. You can come into one of our fantastic stores to collect or have your items delivered to you at your convenience.

Please see our delivery page for more information. Restrictions apply. Prices and delivery times may vary for remote or rural parts of the UK. Working days are Monday-Friday, excluding UK Bank Holidays.

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Check stock and reserve items at your store for collection the same day. If the items are available for home delivery, then we can arrange to have them delivered to your local store for the following day

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Order by 8pm and get your item delivered to you the next day

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Order by 8pm Friday for delivery on Saturday (Not available for NI, Channel Islands or Highlands)

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Order by 8pm and get your item delivered to you by 12pm the next working day (Not available for NI, Channel Islands or Highlands)

Delivery before 10:30am<span style='color:#ADADAD'>Delivery before 10:30am</span>
Order by 8pm and get your item delivered to you by 10:30am the next working day (Not available for NI, Channel Islands or Highlands)

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Forces ONLY and cannot be used for civilian or business deliveries

International Delivery<span style='color:#ADADAD'>International Delivery</span>
International Delivery will take between 7 - 10 days and you are liable for any local duty and/or taxes


Returning an Item

If you receive your order and it is not what you are expecting you can return it back to us within 30 days of receiving the goods for an exchange or refund (including the delivery charge if you return it within 14 days).

You can return your items by using Collect+ or by taking them to any GO Outdoors store (except Hathersage) using your delivery note as proof of purchase.

Unfortunately, orders paid for using PayPal cannot be returned to store and we are currently unable to offer free returns as we offer free delivery over £50 as standard.

See our returns policy for more information.