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Osprey Atmos vs Gregory Baltoro vs Mystery Ranch Bridger | Battle of the Backpacks

Today I'm going to be pitting the three most badass backpacks against each other. I review my 3 picks for best backpacks in order to help you make the right decision for your upcoming adventures. On BackpackingTV, subscribers asked for the comparison between the Osprey Atmos vs Gregory Baltoro. I added the Bridger because it has become my go to backpack on many recent trips.

There are a lot of different types of backpacks on the market. I'm focusing on packs that are best suited for 2 to 5 day treks. This is a typical backcountry excursion. This means I'm omitting the heavy-duty expedition bags, as well as the ultralight options. Let's break down some key backpack categories. Also I will try to address some common questions when it comes to selecting a multi-day, mid-sized backpack. 

Backpack #1: Mystery Ranch Bridger 65L

Anyone who has been following along with BackpackingTV knows that I've fallen in love with Mystery Ranch backpacks. This is only furthered by the latest design for the Bridger 65. It knocks it out of the park. This pack is lighter, the buckles and straps are simplified, and it just makes for an all-round great pack for everyone.

osprey atmos vs gregory baltoro vs bridger: Bridger 65 by Mystery Ranch
Bridger 65L Backpack by Mystery Ranch

What does the Mystery Ranch Bridger 65L cost?

The Bridger 65L retailed for $349 (USD) at the time of the review. I think that's good value for what you get. I recognize that it is a little bit on the higher end of the price spectrum. Especially when compared with the Osprey Atmos 65L ($270) and Gregory Baltoro 65L ($299). But for the difference in price you get more comfort and superior stability. This pack is for both beginner and expert hikers, as both will benefit from Mystery Ranch’s innovative double sternum straps. This design has been seen before in running packs and is a game-changer for backpacking. It improves how you carry the heavier loads (i.e. more stability).

Is the Bridger 65 backpack heavy? 

5.5 pounds might sound like a lot to seasoned backpackers, but because of the way the Bridger 65 carries the pack-weight, it is well worth the couple of extra base pounds. The Bridger pack can carry loads up to 55 pounds. Its sweet spot is for carrying between 30 and 50 pounds. I have easily carried over 40 pounds and the load was surprisingly comfortable. Exceeding 50 pounds is very heavy for a backpacking trip. If you wish to carry heavy loads, that's where other packs like the Mystery Ranch Terraframe come in.

MR Bridger 65 backpack
Mystery Ranch Bridger 65

The Bridger 65 backpack comfortable?

Certainly! The Bridger 65 has nice airflow through the back padding, a cushy hip belt, and it's simple to fit/adjust. Plus, one of my favorite features I've seen on any backpack in the last 10 years is the  creative design of the chest straps. It's inspired by the running vest and, though it looks a little silly at first, fits like an absolute glove and distributes the weight evenly. The Bridger 65 makes carrying a heavy load one of the easiest experiences of any backpack I've used.

How accessible is gear in the Bridger 65L pack? 

Mystery Ranch has done a great job at making things accessible in the newly designed Bridger 65. Some noteworthy features include the detachable lid that can be used as a daypack, the front compartment that fully flays open allowing for easy access to everything inside (not just what's packed on top), and there's a second, superficial pouch with extra storage that also flays open. 

Are the Mystery Ranch backpacks waterproof?

No. The Bridger pack is not waterproof. However, it will be able to withstand a fair bit of rain and moisture before any packed gear gets wet. The pack is made of heavy-duty nylon and treated with DWR for a water repellent finish. I'd be comfortable using this pack without a cover in intermittent rain. But if enduring consistent rain or wet conditions, use a pack cover or use dry bags inside the pack to protect your gear.

For me, the Bridger 65 is the Cadillac of backpacks because it hits my top criteria of storage/organization and it carries weight comfortably and evenly. There's a lot more to unpack (hey oh!), so make sure to check out my in-depth review here. 

Backpack #2: Gregory Baltoro 65L 

The Gregory Baltoro is another stellar backpack. I spent 7 months trekking through South America with the slightly larger, Gregory Baltoro 75L backpack –  so it's not hard to expound on the features, or sing its praises. 

osprey atmos vs gregory baltoro 65l backpack review backpackingtv eric hanson epic trails
Gregory Baltoro 65L Backpack

What does the Gregory Baltoro 65L backpack cost?

At the time of this review, the Gregory Baltoro 65L backpack retails for $299 (USD). This splits the difference between the Mystery Ranch Bridger 65 ($349) and the Osprey Atmos 65 ($270). Because of the balance of features, comfort, stability, and weight, I think this is a good-value price-point.

Is the Baltoro 65 backpack heavy?

At 4.84 pounds, the Baltoro 65 is a little on the heavier side. But it carries the load well and it boasts a capacity of 50 pounds, which is more of an expedition weight (or an overpacking scenario). The bit of extra weight is well-worth the additional features. 

When comparing the Osprey Atmos vs Gregory Baltoro, the Baltoro 65 is heavier but carries load well

The Gregory Baltoro 65 comfortable? 

The Gregory Baltoro 65 backpack is a comfortable pack. I appreciate the high amount of breathability against my back, the yoke system is dialed in, and the shoulder straps are quite comfortable. Also, the hip belt is designed to cater to your movement and has some thoughtfully placed pockets to boot.

The design of the top lid is not only good for organization, but the smaller zippered compartments promote conscious packing, which also improves the comfort of the bag. A lot of times the top lid just becomes a dumping ground for any leftover gear. Overloading the top can throw off the whole balance of the pack – not good for long slogs.

Just like the Bridger 65, the Baltoro 65's front pouch flays open for full access to your whole pack. However, the Baltoro requires undoing a few buckles first, whereas the Bridger opens even easier (so score a point in that column). Nonetheless, the Gregory Baltoro 65 backpack is thoughtfully designed from top to bottom. Speaking of which, let's not forget about the sleeping bag compartment on the bottom of the bag. Another well-considered access point. The Baltoro also has a large mesh pouch, which I always love for storing my rain jacket. And finally, there are some easy-grab side pockets that are perfect for stashing trekking poles and water bottles. 

Gregory Baltoro 65 backpacks waterproof?

The Gregory Baltoro 65 is not a waterproof backpack but it does come with a raincover. Not a lot of backpacks include this and so credit to Gregory Baltoro for saving backpackers an extra purchase. The Baltoro 65 also features an H2O resistant WaterShield hip belt pocket with a YKK AquaGuard zipper, which is ideal for storing your phone or camera in moderate rainfall. 

Backpack #3: Osprey Atmos 65L backpack

Osprey is one of the top-selling pack manufacturers and the Atmos 65 is, rightfully so, one of their best-selling bags. It is another wonderful choice, especially for beginner and intermediate hikers carrying those 35 to 50 pound loads. 

osprey atmos vs gregory baltoro
Osprey Atmos Backpack

What does the Osprey Atmos 65L backpack cost?

At the time of this review, the Osprey Atmos 65L backpack retails for $270 (USD). This makes it the least expensive of my 3 best backpack picks (with the Gregory Baltoro 65 coming in at $299 and the Mystery Ranch Bridger 65 topping out at $349). If your main priority is budget, then the Atmos 65 makes for a great value pack that doesn't skimp on quality. 

Is the Osprey Atmos 65 pack heavy?

At 4.56 pounds, the Atmos 65 is the lightest backpack from this list. By not having the extra zippers for the front access (like the Bridger and the Baltoro), Osprey is able to save some weight in the design of the Atmos. On that note, the Atmos also has a detachable lid and a built-in, lower-profile cover that can shed more weight for streamlined outings. The downside there is that the alternative flap does tend to get in the way when I'm using the full set up. 

Osprey Atmos vs Gregory Baltoro
Anti-Gravity Harness on the Osprey Atmos

Is the Osprey Atmos 65 backpack comfortable? 

The biggest standout in terms of comfort is in terms of ventilation. Osprey's Anti-Gravity yoke system keeps the pack off of your back and delivers some serious airflow. This means less back-sweat and fresher clothes for the next leg of the journey. This same system also helps distribute the weight more evenly, making it feel like there's less on your back than there really is. 

Osprey Atmos vs Gregory Baltoro
Osprey Atmos vs Gregory Baltoro: Osprey Atmos 65 is a popular beginner to intermediate backpack for a reason

How accessible is gear in the Osprey Atmos 65L pack?

Compared to the Bridger and the Baltoro, the Atmos 65 utilizes a simpler design. This means it doesn't have large front-access to the inside of the bag. This is a bit of a ding by my standard as I'm not a fan of having to pull out contents in order to get at something lower in the pack. That being said, the Osprey Atmos 65 does feature large side compartments for enhanced organization and superficial storage. Just like with the Baltoro, the Atmos has a large mesh pocket up front, which I personally like to stash my rain jacket in, in case the conditions change abruptly. 

Are the Osprey Atmos 65 backpacks waterproof?

No. Similar to the Bridger 65, the Baltoro 65, as well as other flagship backpacks from Osprey, the Atmos 65 is water resistant, not waterproof. 

Ever since my full review, which you can watch here, lovers of the Atmos 65 have been chiming in in the comments. This speaks to the fan base of this tried-and-true backpack. 

What size backpack do I need for a multi-day hiking trip?

I think that 65 liters is the sweet spot for most backpackers on a standard 2 to 5 day adventure (or longer if you have supply stops). That's one of the reasons why I highlighted the Mystery Ranch Bridger 65, the Gregory Baltoro 65, and the Osprey Atmos 65 – as the names would suggest, they are all 65L packs.

The best backpack for 2022: Mystery Ranch Bridger 65L, Gregory Baltoro 65L, or Osprey Atmos 65L? 

As always, I have to start with the classic answer: It depends. A beginner to intermediate hiker looking for the lightest option, and/or are on a budget, then the Osprey Atmos 65 could be a great choice for you.

If you're more experienced and looking for some advanced design features, then I would steer you towards the Baltoro or the Bridger.

If the slightly heavier weight and more premium price tag of the Bridger sits right by you, then you might want to lean that way, as you will be rewarded with similar features of the Baltoro, but with even more weight distribution and comfort. That places the Baltoro in the goldilocks zone for price, weight, comfort and features but the ultimate winner will be best decided by the individual, their body, and their needs. Whatever you go with, you'll be well set up for your next adventure. 

If you want to compare with other similar-size trekking bags I’ve reviewed, check out my Battle of the Backpacks videoor these other backpack reviews.

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