Osprey Atmos AG 65 Review

The Osprey Atmos AG 65 is designed to carry heavy loads comfortably, making it an excellent choice for backpackers. It boasts ample pockets that simplify organization, and the included rain cover means your backpack’s contents will remain dry and protected.

Osprey Atmos Ag 65 Backpack, Rigby Red, Small
  • Very comfortable to carry
  • Lots of storage options

Cons / Reasons to Avoid

  • Not suitable to carry more than 18kg / 40 lbs
  • Water pockets are not easy to use

This is an excellent all-round backpack for hikers. Its adjustable fit and effective weight distribution using Osprey’s AG (anti-gravity) suspension system make the load easy to carry. The backpack’s thick padding on the shoulder straps, hip belt, and back enhances comfort during prolonged use. Additionally, it offers extensive storage options, including nine pockets, various straps, and loops to accommodate your gear. It’s easy to see why the Osprey Atmos AG 65 is one of the most popular backpacks, and we recommend it as the best hiking backpack for men in our best waterproof hiking backpacks round up.

Compare to Similar Products:

Osprey Atmos AG 65
Osprey Kestrel 48
Osprey Aether Plus 70
Gregory Paragon 58
Gregory Baltoro 65
Big Agnes Parkview 63
Osprey Aether 65
Granite Gear Blaze 60 Women
The North Face Women's Terra 55
Dueter Air Contact Core 60+10
Osprey Atmos Ag 65 Backpack, Rigby Red, Small
Kestrel 48L Men's Backpacking Backpack
Osprey Aether Pro 70L Men's Backpacking Backpack, Kepler Grey, Large
Gregory Mountain Products Paragon 58 Backpacking Backpack
Gregory Mountain Products Men's Baltoro 65, Onyx Black, Small
Big Agnes Parkview 63L Backpack for Multiday Hiking, Fog, Large
Osprey Aether 65L Men's Backpacking Backpack, Garlic Mustard Green, L/XL
Granite Gear Blaze 60L Backpack - Black/Black Gingham Long
THE NORTH FACE Women's Terra Backpacking Backpack, Agave Green/Pale Lime Yellow, XS-S 55 L
Deuter Aircontact Core 60+10 SL Shale/Ivy One Size
Buying Options
Our Award
Best for Men
Best Lighter Backpack for Men
Best Large Capacity Backpack for Men
Best for Women
Best Lighter Backpack for Women
Best Large Capacity Backpack for Women
S/M - L/XL
S/M - L/XL
S/M - L/XL
S/M - M/L
S - M - L
M - L
S/M - L/XL
XS/S - M/L
W - Regular
2 - 2.2 kg
1.9 - 2.1 kg
2.5 - 2.8 kg
1.5 - 1.6 kg
2.1 - 2.4 kg
1.6 - 1.8 kg
2.2 - 2.3 kg
1.3 - 1.4 kg
1.6 - 1.7 kg
2.1 - 2.3 kg
65 - 68 liters
46 - 48 litres
68 - 70 liters
58 litres
65 litres
63 + 10 liters
65 - 68 liters
60 liters
55 litres
60 + 10 liters
13.6 – 18 kg
9.1 – 15.9 kg
14 – 27 kg
22.7 kg
22.7 kg
22.7 kg
14 - 27 kg
22.7 kg
15 - 20 kg
Torso Lengths
43 - 58.9
40.5 - 58.5 cm
43 - 58.5 cm
38 - 60 cm
40.6 - 55.9 cm
46 - 56 cm
43 - 58.5 cm
38.1 - 60.9 cm
35.5 - 47.7 cm
35 - 62 cm
Rain Cover

Analysis and Test Results

The Osprey AG 65 has all the features any hiker could need. There are nine pockets, making organizing and packing your gear simple. There are plenty of straps and loops available if you need extra storage. The pockets are easy to access, and most are zippered. The water bottle pockets are Osprey’s dual access design, which can be fiddly to use.

The fit of this backpack offers lots of adjustability to accommodate a large range of sizes. The Anti-Gravity system works well to make it easy to carry a full load, and plenty of padding helps make this an extremely comfortable backpack. It’s easy to adjust the fit to get it exactly right to fit your individual frame. The backpack weighs a bit more than comparable models. However, few users complain since the extra weight is due to the extra storage and the padding that makes it comfortable to carry. The maximum load for this backpack is 18kg / 40 lbs, and although you will probably have space for more than that amount, it does not perform as well if you overload it. This is a well-designed backpack that is difficult to find fault with.

See the Osprey Atmos AG 65 in more detail: 

Performance Comparison

Osprey Atmos AG 65


The main body uses recycled 210 denier honeycomb nylon, with the base made of tougher recycled 500 denier high tenacity nylon. The frame is composed of 4 mm powder-coated LightWire aluminum alloy.


Thanks to the design of the AG system, this backpack has excellent breathability. The integrated back panel with open mesh ExoForm helps to create good airflow around your back.

osprey atmos 65 ag backpack


The nylon that composes this backpack has a PFC/PFAS-free DWR coating that helps to make it water-resistant. However, if you find yourself hiking in the rain, a fitted rain cover is supplied to ensure your rucksack’s contents stay dry. The rain cover is located in a pocket at the very bottom of the backpack.


The Osprey Atmos AG 65 comes in two sizes – small/medium and large/extra-large. There is a woman’s version called Aura. There is also an LT version of the Atmos 65 AG that is lighter but has less storage.

65 liters 3967 cubic inches
2.23 kg 4.9 lbs
14 - 27 kg 30 - 60 lbs
80 x 40 x 28 cm 31.5 x 15.7 x 11 inches
Large/Extra Large
68 liters 4,150 cubic inches
2.3 kg 4.95 lbs
14 - 27 kg 30 - 60 lbs
85 x 40 x 28 cm 33.5 x 15.7 x 11 inches


This backpack has Osprey’s Custom Fit-on-the-Fly system on the shoulder straps and hip belt. This means you can release the Velcro fastenings and move the padding to the position that suits you. This system also means you can alter the angle of the hip belt. The shoulder harness can easily be slid up and down to fit your torso length. The hip belt uses the Crossbody ErgoPull to tighten the hip belt. The shoulder straps and load lifters are also simple to adjust.

Torso Length
Small/ Medium
43 - 53 cm 17 – 21 inches
Large/ Extra Large
48 - 58.5 cm 19 - 23 inches
osprey atmos 65 ag backpack


There is no shortage of storage options on this backpack. The main compartment is a good size with an extra section at the bottom that can be separated with a zippered divider. As well as being accessed the traditional way through the top, there is a long zip on each side to make it easy to reach the bottom of the pack without digging through from the top. The lid has two zippered pockets, and there are two long zippered pockets on each side of the front panel. The front panel has a reinforced fabric shove pocket. On each side, there are dual-access water bottle pockets. On the hip belt are two more generously sized pockets with zips.


Hikers who own this backpack can’t wait to tell you how comfortable it is. The Anti-Gravity system has a suspended mesh back panel that seamlessly transitions from the top to the hip belt, promoting air circulation and minimizing contact with your back. The flexible peripheral frame efficiently transfers the load to the hip belt, ensuring a stable and balanced carrying experience, while the adjustable harness enhances the overall fit and load control. There’s plenty of padding on the straps where needed, and the hip belt snugly envelops you.

osprey atmos 65 ag backpack


Inside the pack, you’ll find a designated pocket tailored for a water reservoir with a central back exit port. This pocket can accommodate a three-liter water bladder, but there isn’t one included.

The floating lid can be removed if needed and has lash points for attaching gear. You can also use the dual upper and lower side compression straps to secure items as well as to tighten and stabilize the load. In addition, there are removable sleeping pad straps at the bottom of the front panel.

You can find Osprey’s Stow-on-the-Go trekking pole attachment system on the shoulder straps. The pack has dual ice axe loops with upper compression strap captures and bungee tie-offs. Inside the main compartment is a compression strap to increase load stability.

There is an adjustable sternum strap to assist in keeping the shoulder straps in place. The sternum strap has an integrated safety whistle. The shoulder harness is secured with ladder locks.

osprey atmos 65 ag bakpack


You can be confident that this backpack will cope with anything the trail throws at you. The extra tough nylon on the base and the high standard of the workmanship and materials mean this is a very durable piece of equipment.

Osprey’s All Mighty Guarantee is a warranty that assures the quality of their backpacks. If your Osprey backpack ever experiences damage or a defect, they will repair it free of charge, no matter when you purchased it. While it doesn’t cover wear and tear, accidents, or abuse, the warranty does offer substantial coverage. If your backpack is not reparable, they will replace it or offer an appropriate substitute.

osprey atmos 65 ag backpack


Osprey’s commitment to sustainability is evident through their partnerships with organizations such as the European Outdoor Conservation Association (EOCA) and the National Parks Foundation. They use eco-friendly and recycled materials in their backpacks to reduce their ecological footprint. This backpack uses Bluesign-approved, recycled materials, and PFC/PFAS-free DWR coatings. Water and energy efficiency are prioritized in their production processes, helping to reduce carbon emissions. The company extends the life of its products through repair services, boosting durability and reducing waste.


The Osprey Atmos AG 65 backpack is a great all-rounder. It gives you plenty of pockets that are generous in size and easy to access. Its biggest selling point is how comfortable it is to carry with the AG system, ensuring you won’t notice the weight. The multiple points of adjustability and the ample padding add to the comfort. Including a rain cover and the abundant straps and loops increase this backpack’s versatility, making it suitable for a wide range of hiking adventures.

Disclaimer: This article contains Affiliate Links. You won’t pay any more for buying through these links, but we may receive a commission from any purchases made through them. As an Amazon Associate, we earn from qualifying purchases. If you choose to support us by buying through our links, we thank you as it helps us to continue providing the resources we do to help you enjoy the outdoors more!