Osprey Atmos AG 65 Backpack Review
Updated:
Jan 20, 2025The well-rounded, feature-heavy Osprey Atmos ($370) is one of our favorite “classic” backpacking packs. It prioritizes comfort and user-friendliness, highlighted by a trampoline-style mesh backpanel that allows for excellent airflow in warm conditions and hugs tight to the body. Simple, quick torso and hipbelt micro adjustments allowed us to achieve a perfect fit, and an embarrassment of pockets means there’s a place for every bit and bob. The Atmos is relatively heavy, however, and the sky-high price for its carrying capacity is hard to ignore.
Comfort
Organization
Weight
Durability
Water Resistance
Sustainability
Weight
4 lb. 9.8 oz.
Stated Load Limit
40 lb.
Fabric(s)
210D & 500D nylon
Adjustable Torso
Yes
# of Pockets
8
Access
Top, sides, bottom
Capacities
50, 65L
Included rain cover
Yes
Pros
Cons
Osprey Atmos AG 65
For this season's top models, see our guide to the Best Backpacking Backpacks.
The Osprey Atmos 65’s main selling point is right in its name: The “AG” stands for “Anti-Gravity,” a nod to the trampoline-style mesh that runs uninterrupted from the shoulder yoke to the hipbelt. The mesh is tensioned tight on the metal perimeter frame, resulting in a stable carry—no dreaded pack-sway here—and skillful load distribution that eliminates pressure points. The benefits are quickly apparent: When I carried the Atmos on a weekend trip in Olympic National Park, I daresay it felt lighter than my most minimalist backpacking packs, even with 35 pounds on board.
Another benefit of the suspended mesh backpanel is that it allows air to flow freely between the back and the pack, eliminating the sweaty back-against-pack interaction I’m used to—a welcome bonus during the hot summer days we experienced in the Olympics. What’s more, the plush padding on the hipbelt and shoulder straps conformed to my body and absorbed any shock left over after the suspension had done its job. As I’ll discuss below, the Osprey Atmos AG 65 is by no means a lightweight pack, devoting several pounds to its padding and suspension. However, it pays off: I was pleasantly surprised with how much the pack’s load-carrying comfort absorbed the extra weight.
The best thing I can say about the Atmos’ organization is that in most instances, I did not have to take the pack off to retrieve the gear I needed while on the trail. It has a whopping eight external pockets (in addition to the main compartment): The dual-side mesh pockets are great for storing water bottles or smaller items on the go, and the large, zippered hipbelt pockets held my snacks, sunscreen, and sunglasses. I was even able to access the two zippered compartments on the top lid without stopping to remove the pack. And on either side of the front “shove-it” compartment are zippers that access a large pocket—I stored my hiking layers here and love how easy they were to retrieve in a pinch.
In addition to these compartments, the Atmos 65 also features four points of access to the main compartment: the top, which closes via a drawstring; a long zipper on each side; and a zipper at the bottom, which opens to a section of the main compartment with a removable divider, usually used to stash a sleeping bag. If you're accustomed to an ultralight backpacking pack, you might find the four access points excessive, but they're great for retrieving buried gear without needing to throw the pack’s entire contents on the side of the trail.
If I have one complaint about the Atmos’ storage layout, it’s this: While the variety of pockets can be a selling point for hikers who appreciate organization, it can also make the backpack feel overly complicated. The multiple compartments might lead to overpacking or difficulty remembering where certain items are stowed, especially in a rush. But for hikers who love abundance, the plethora of compartments could be a boon.
If you’re not an ultralight enthusiast or looking to set off on a thru-hike, the Atmos’ weight is reasonable considering its robust feature set. At just over 4.5 pounds for the small/medium version, it’s right in line with similarly designed packs such as the Gregory Zulu 65 (4 lb. 4.8 oz.) and the Deuter Aircontact Core 50 + 10 (4 lb. 12.2 oz.). All of these packs are designed to carry around 35 pounds—although Gregory rates the Zulu up to 50—and offer good-to-great padding, durability, and organization.
Going heavier—think of packs such as the Gregory Baltoro 65, which weighs 4 pounds 11.2 ounces—you’ll often find packs with burlier frames and greater carrying capacities (the Baltoro maxes out at 50 lb.). Organization will most likely stay about the same, though. If you opt for a lighter backpack like the popular Osprey Exos 58, expect the carrying comfort to decline with heavy loads, and features such as pockets, padding, and ventilation to become sparser and more streamlined.
Typical for packs of this style, the Osprey Atmos AG 65 is made primarily of 210-denier nylon, with thicker, 500-denier nylon at the base. While not completely bombproof, this material set is durable enough to withstand day after day and season after season of heavy use. In other words, it’s about as thick as you need to go with a nylon backpacking pack. Of course, new-age materials like Dyneema and Robic nylon offer better tear resistance for a lighter weight, but they’ll also cost you considerably more.
Unfortunately, the Atmos isn’t much of a value buy. At $370, it costs more than any of its direct competitors, putting it in the rarefied air of specialized ultralight packs or notoriously expensive packs. While I’m not saying the Atmos is a shoddily made pack—its construction is on-point and its design is top-notch—I’ll be the first to point out that you don’t need to pay this much for a backpacking pack unless you really, really like its fit and features. There are plenty of models out there that offer similar levels of comfort, space, and durability. The Atmos is a great pack, but you can certainly save money by looking elsewhere.
In a neat bit of design, the Osprey Atmos AG 65 comes with an attached rain cover. The cover stashes in a purpose-built zippered compartment on the bottom of the pack and is affixed via a webbing strap. Of course, you can always cut this webbing strap to remove the rain cover and the few extra ounces it represents. However, I appreciated that it kept me from misplacing the cover, and experienced no issues navigating the connection when deploying the cover in the rain. If you’re not a fan of rain covers, the Atmos’s nylon is coated with a durable water-repellent (DWR) coating, which effectively guards against light rain and splashes (when clean) but will be overwhelmed in heavy rain.
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Longevity
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PFAS-Free DWR
Durable water-repellent (DWR) finishes can contain PFAS (per- and polyfluoroalkyl substances). These highly persistent “forever chemicals” are used in outdoor gear for their strong resistance to water, oil, and heat, but are linked to environmental contamination and a range of health concerns. A green check mark indicates the product uses a PFAS-free DWR, while a red X means the DWR contains PFAS.
Recycled Materials
Recycled materials are prevalent in outdoor gear, with nylon, polyester, wool, and down among the most common, but the composition varies widely. A green check mark indicates the product is made with a substantial amount of recycled materials (100% recycled or the core fabric that makes up most of the product is recycled), a yellow check means it contains a moderate to small amount of recycled materials, while a red X means there are no recycled materials in the product.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile management system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A green check mark indicates a product is either a Bluesign Product (contains at least 90% Bluesign-approved fabrics and 20-30% Bluesign-approved accessories) or features a significant amount of Bluesign-approved materials. A yellow check mark means it uses some Bluesign-approved materials but less than the aforementioned category, and a red X means there are no Bluesign-approved materials in the product.
Responsible Manufacturing
This criterion evaluates a brand’s commitment to fair wages, safe working conditions, and reducing environmental impact through certifications and programs like Fair Trade Certified, Fair Wear Foundation, Worldwide Responsible Accredited Production (WRAP), and the Fair Labor Association, while also recognizing brands that manufacture primarily in the U.S. or Europe under strict labor and environmental regulations. A green check mark indicates a brand meets our responsible manufacturing criteria, while a red X means it does not.
Recycled and/or Reduced Packaging
Packaging can add significant waste to outdoor gear purchases, so many brands work to reduce its impact by using recycled materials, incorporating Forest Stewardship Council-certified paper products, and minimizing plastic and paper use. A green check mark indicates a brand uses recycled or reduced materials across all of its packaging, a yellow check indicates moderate or limited use of recycled or reduced packaging, and a red X indicates the brand does not make either of these efforts.
Repair Services
Repair services extend the lifespan of outdoor gear and reduce overall consumption, though programs vary widely. Some brands offer comprehensive repairs for a range of issues, while others provide limited or no repair support. A green check mark indicates a robust repair program, a yellow check mark indicates limited repair services, and a red X indicates the brand does not offer repair services.
Resale and/or Recycling Services
Resale and recycling programs help keep outdoor gear in circulation longer and out of landfills, ranging from trade-in resale platforms that offer store credit to take-back initiatives that recycle products at the end of their usable life. A green check mark indicates a brand offers both resale and recycling programs, a yellow check mark indicates it offers one or the two, and a red X indicates it offers neither.
Carbon Footprint Tracking
This criterion evaluates whether a brand measures, reports, and works to reduce its greenhouse gas emissions using established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. A green check mark indicates a brand publicly reports greenhouse gas emissions data, sets clearly defined reduction targets, and uses established tracking frameworks such as Higg or The Change Climate Project. A yellow check mark indicates the brand tracks emissions and outlines reduction goals but provides limited data, lacks science-based verification, or does not clearly report progress. A red X indicates the brand does not appear to track greenhouse gas emissions or provides so little information that its efforts cannot be verified.
Annual Impact Report
Annual impact reports provide transparency and accountability by outlining a brand’s sustainability efforts across areas such as material sourcing, greenhouse gas emissions, waste, water use, supply chains, and packaging. A green check mark indicates a brand publishes a detailed, brand-specific impact report that closely aligns with our sustainability criteria and leaves little room for ambiguity. A yellow check indicates a brand provides some relevant sustainability reporting but lacks detail in key areas or is covered only briefly within a parent company report. A red X indicates a brand does not regularly publish an impact report.
Tester: 6’3”, 21” torso
Size tested: L/XL
Osprey sells the Atmos AG 65 in two sizes: a small/medium and a large/XL. Although two options aren’t a lot, the pack makes up for it with a fully adjustable torso length and hipbelt. The torso adjustment—which takes the Atmos from 17 to 20.5 inches in the small/medium and 19.5 to 23 inches in the large/XL—is one of the simplest I’ve encountered: A slider system located behind the backpanel moves the shoulder harness up and down. What makes this feature truly well thought out is how seamlessly it integrates with the trampoline mesh; a combo of hook-and-loop connections and ladder-lock buckles makes it easy to reposition the backpanel and lock it in place while maintaining the tension in the mesh.
Osprey Aether 65 ($370): Burlier Brethren
The Osprey Aether 65 (women's Ariel) is designed to go bigger than the Atmos, both load-wise and in terms of wear and tear. With a thicker, 420-denier nylon and a hardier suspension, it can handle an eye-watering 60 pounds, and the simpler mesh backpanel has fewer breakable parts. However, you don’t get the airflow of the Atmos’ suspended backpanel, and the Aether’s hipbelt isn’t seamlessly connected to the backpanel, which could affect stability and comfort. Storage-wise, it lacks the convenience of the Atmos’s two zippered back pockets and side access. Added up, the Aether is a durable, function-first backpacking pack that can carry heavier loads, but it’s not as feature-rich or comfort-forward as the Atmos. For more, read our women's Osprey Ariel review.
Gregory Baltoro 65 ($370): Another Time-Tested Classic
The Baltoro has gone through many iterations in its 16-year history, and its staying power is a testament to its design and performance. This pack is a load-hauler: With a steel frame, fiberglass stay, and standard backpanel (i.e., not suspended like that of the Atmos), it deftly handles loads up to 50 pounds. Its burly material set is built to last, too, including 210-denier nylon with 420-denier reinforcements on the main compartment and a super durable 630-denier base. Predictably, the Baltoro also has plenty of storage: It offers nine exterior pockets as well as a U-shape front zipper that splays open the main compartment. And like the Atmos, its torso and hipbelt are both adjustable, although the torso length adjustment is a tad trickier. While the Atmos is a more approachable and luxurious all-rounder, the Baltoro is a time-tested pack built for long and involved trips. For a deeper dive, see our review of the Baltoro 75.
Osprey's “classic” backpacking pack, the well-rounded Atmos (women’s Aura) prioritizes comfort and user-friendliness, highlighted by a trampoline-style mesh backpanel and copious pockets. The weight and steep price are hard to ignore, though.
Comfort
Organization
Weight
Durability
Water Resistance
Sustainability
The Aether (and women’s Ariel) is Osprey’s long-standing, flagship workhorse pack designed to provide a stable, comfortable carry for long hikes and large loads. But its heavy weight and less-than-stellar backpanel breathability may dissuade some buyers.
Comfort
Organization
Weight
Durability
Water Resistance
Sustainability
With its load-eating suspension, supportive padding, and durable materials, the Baltoro (women’s Deva) has become synonymous with “heavy duty” over the years. However, it’s too overbuilt and expensive for most “normal” backpacking trips.
Comfort
Organization
Weight
Durability
Water Resistance
Sustainability
Is the Atmos AG 65 for You?
Backpack design can sometimes feel like a competition to include the most up-to-date tech possible, and the Osprey Atmos 65 AG does just that while remaining extremely user-friendly. Its trampoline-style backpanel/suspension combo is perhaps the best in the business, warding off swampy backs while providing a load-alleviating, hot-spot erasing carry up to about 40 pounds. And while some backpackers might find the multitude of pockets a bit much, we’re big fans of organization in large packs and commend the Atmos for providing a space for every conceivable piece of gear. Finally, the best-in-class torso adjustment system and wide hipbelt range will accommodate most body sizes. We understand if you take issue with its price, but if you’re looking for one of the best all-around backpacking packs for everything from weekend trips to 10-day expeditions, the Atmos is hard to beat.
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