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Trail & Terminal

02 — Trail / Roundup

Best backpacking backpacks

A multi-day pack is the one piece of gear where fit beats every spec on the label. Here is how to read the specs that do matter, and five packs that earn their weight.

By Brijon M.Last updated How we pick
A loaded backpacking pack resting on rock on a mountain trail

The short answer

The Osprey Atmos AG 65 is the pick for most people doing overnights to week-long trips: its Anti-Gravity suspension carries a loaded pack better than anything near its weight, and the torso and hipbelt both adjust. If your loads regularly run heavier, the Gregory Baltoro 65 is rated for more. If they run lighter, the Granite Gear Crown3 60 saves over two pounds.

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Our picks at a glance

Best backpacking backpacks -- ranked picks
#ProductBest forKey specPrice
1Osprey Atmos AG 65The suspension that made ventilated backpanels worth having. Adjusts in both directions, carries a real load, and is not especially light.most people, overnight to a week62-68 L by size, about 4 lb 8 oz to 4 lb 10 oz
2Gregory Baltoro 65Rated for 50 pounds and built like it. The pack to buy if your load is the problem, not your pack.heavier loads and longer trips65 L, roughly 4 lb 12 oz to 5 lb 4 oz, 50 lb max load
3Osprey Exos 58Under three pounds with an aluminum frame and a ventilated panel. The best compromise between light and load-carrying.a light pack that still has a real frame58 L, about 2 lb 13 oz, removable lid
4Granite Gear Crown3 60Just over two pounds, and the only brand in this list that publishes a load rating for each frame configuration. Refreshingly honest.the lightest pack here, with published load limits60 L, about 2 lb 5 oz without the lid
5TETON Sports Scout 3400An internal-frame 55-liter pack with an included rain cover at a fraction of the premium prices. Heavy, and competent.a first pack, or a pack for the once-a-year trip55 L (3,400 cu in), about 4.5 lb

Ranked by the criteria in how we pick. We hold no live prices, so every button goes straight to the current Amazon listing.

Every pick, in full

The picks

1

Best for most people, overnight to a week

Osprey Atmos AG 65

The suspension that made ventilated backpanels worth having. Adjusts in both directions, carries a real load, and is not especially light.

This is the default answer for a reason. Most people buying a multi-day pack are carrying 25 to 40 pounds, hiking two to six days, and have never had a pack fitted properly. The Atmos covers all three: the suspension is forgiving of a load that is not perfectly packed, the adjustment range means an approximate torso measurement still lands close, and the mesh backpanel moves enough air that a sweaty back stops being the thing you think about.

What you pay for that is weight. At roughly four and a half pounds empty it is one of the heavier packs in this list, and if you are chasing a light base weight this is the wrong starting point -- see our ultralight gear list for what that choice actually requires. For everyone else, carrying an extra two pounds of pack to carry the other thirty pounds comfortably is a trade worth making.

Specs

  • Osprey lists 62 liters in S and 68 liters in L (the nominal 65 is the middle)
  • Weight around 4 lb 8 oz (S) to 4 lb 10 oz (L)
  • Anti-Gravity suspension: a continuous mesh panel spanning backpanel and hipbelt
  • Nylon dobby body with a heavier-denier base; adjustable torso and Fit-on-the-Fly hipbelt
  • Women's equivalent is the Aura AG 65, listed slightly lighter at about 4 lb 7.8 oz

Good for

  • The Anti-Gravity mesh wraps the load against your back instead of hanging it off two straps
  • Both the torso length and the hipbelt adjust, so one size covers a wide range of bodies
  • Osprey's warranty and repair record is the most-cited reason owners buy a second one

Bad at

  • Heavy for its volume -- roughly two pounds more than the frameless and minimal-frame packs here
  • The mesh suspension pushes the load slightly away from your spine, which costs a little stability on scrambles
  • The mesh itself is the part owners report snagging and tearing on brush and rock
2

Best for heavier loads and longer trips

Gregory Baltoro 65

Rated for 50 pounds and built like it. The pack to buy if your load is the problem, not your pack.

There is a real category of trip the Atmos is not the right tool for: winter loads, bear-canister trips, carrying a share of a group kit, or any trip where the food bag starts at a week. Past about 40 pounds a mid-weight suspension starts to collapse into your shoulders, and the Baltoro is built specifically for the range above that.

The cost is honest and obvious. It is the heaviest pack here, it is warm against your back, and if your actual loads are 28 pounds you are carrying structure you will never load. Buy this when you know what you carry. Buy the Atmos when you do not yet.

Specs

  • 65-liter capacity; Gregory states a 50-pound maximum carry weight
  • Weight runs about 4 lb 11.5 oz (S) to 5 lb 4 oz (L) depending on size
  • Current version uses Gregory's FreeFloat A3 suspension with a 3D-shaped harness and hipbelt
  • Multiple access points including a front U-zip and a bottom sleeping-bag compartment
  • Rain cover included (listed at about 0.22 lb)

Good for

  • The highest stated load rating here, and the suspension genuinely holds shape under it
  • Front-panel zip access means you are not unpacking the whole bag to reach the middle
  • A rain cover in the box, which most packs at this level leave you to buy separately

Bad at

  • The heaviest pack in this roundup -- over five pounds in the large size
  • All that structure is wasted weight if you never carry more than 30 pounds
  • Deep, heavily shaped padding is warm; it ventilates less well than the Atmos mesh
3

Best for a light pack that still has a real frame

Osprey Exos 58

Under three pounds with an aluminum frame and a ventilated panel. The best compromise between light and load-carrying.

The Exos is the pack people move to once they have done a few trips and noticed that the heaviest single item in their kit is the bag holding everything else. It keeps the two things that matter -- a frame that moves weight onto your hips, and a backpanel that is not pressed flat against your shirt -- and strips the padding, pockets and fabric weight around them.

The number to be honest about is the load ceiling. This is a 30-pound pack that will carry 35 pounds unhappily, and the hipbelt is where you feel that first. If your base weight is already low and your food carry is short, it is the most pack per ounce here. If you are still figuring out what to bring, start heavier. Our daypack roundup covers the other end of the same spectrum.

Specs

  • 58-liter capacity; weight commonly listed around 2.84 lb (about 2 lb 13 oz) in S/M
  • 4 mm powder-coated LightWire aluminum peripheral frame
  • AirSpeed tensioned-mesh backpanel with roughly 5 inches of air space
  • Removable top lid (about 4.4 oz) drops the pack to roughly 2 lb 8.6 oz
  • Women's equivalent is the Eja 58

Good for

  • Nearly two pounds lighter than the Atmos while keeping an actual load-transferring frame
  • Removable lid is a genuine option, not a gimmick -- the pack works as a roll-top without it
  • The ventilation gap is larger than most packs in this weight class manage

Bad at

  • The thin hipbelt and shoulder padding stop being comfortable somewhere around 30 to 35 pounds
  • Lighter fabrics; it will not take the abuse the Baltoro shrugs off
  • Less organization than the heavier packs -- fewer pockets, no front zip panel
4

Best for the lightest pack here, with published load limits

Granite Gear Crown3 60

Just over two pounds, and the only brand in this list that publishes a load rating for each frame configuration. Refreshingly honest.

The thing this pack does that nobody else in the category does is tell you where it stops working. Three configurations, three stated load limits. That single piece of published honesty makes it far easier to buy correctly than a pack marketed on a vague promise of comfort.

In use it is a light, simple roll-top with a big stretch pocket and a frame you can remove. The trade is that light packs punish bad packing: there is not enough padding between you and the contents to absorb a stove digging into your back, so the discipline of packing soft things against the backpanel stops being optional. If you have never thought about load order, this is the pack that will teach you.

Specs

  • 60-liter capacity; regular size listed around 2.3 lb without the lid
  • Removable framesheet (about 6.5 oz) and removable lid
  • Granite Gear publishes load ratings by configuration: roughly 25 lb frameless, 35 lb with framesheet, 43 lb with framesheet plus aluminum stay
  • Roll-top closure with a large stretch front pocket
  • Offered in a unisex and a women's-fit version

Good for

  • The lightest pack in this roundup by a clear margin
  • Published per-configuration load ratings let you match the frame to the actual trip
  • Strip the lid and framesheet for a fastpacking weekend, put them back for a week out

Bad at

  • Minimal padding everywhere -- a badly packed load is immediately uncomfortable
  • Granite Gear does not sell the framesheet separately, so losing it is a real problem
  • Less widely stocked than the Osprey and Gregory packs, so sizes come and go
5

Best for a first pack, or a pack for the once-a-year trip

TETON Sports Scout 3400

An internal-frame 55-liter pack with an included rain cover at a fraction of the premium prices. Heavy, and competent.

There is a genuine case for a budget pack, and it is not the case the brand marketing makes. It is this: if you do one or two trips a year, or you are not yet sure backpacking is for you, spending heavily on a pack is the worst-value purchase in the whole kit. A competent internal-frame pack that carries 30 pounds adequately gets you on the trail, and the trail is what tells you what to buy next.

What you should not do is take this on a week-long trip with 40 pounds in it. The frame and hipbelt are not built for that, and the failure mode is a sore pair of shoulders two days from the car. For a sense of what else to buy first versus skip, see best hiking gear for beginners.

Specs

  • 3,400 cubic inches / 55 liters; listed weight about 4.5 lb
  • Internal frame with multi-position torso adjustment, fits torsos roughly 15-19.5 inches
  • 600-denier polyester diamond ripstop fabric
  • Rain cover stowed in a Velcro pocket in the base
  • Separate bottom sleeping-bag compartment, hydration-reservoir sleeve (reservoir not included)

Good for

  • Costs a small fraction of the premium packs and does the fundamental job
  • Rain cover and sleeping-bag compartment included rather than sold separately
  • Wide torso adjustment range makes it a reasonable pack to hand to a growing teenager

Bad at

  • As heavy as the Atmos with 10 fewer liters and far less capable suspension
  • Hipbelt padding compresses under load; above about 30 pounds the weight migrates to your shoulders
  • Buckles, zippers and strap webbing are the parts owners report failing first

01 — Compare

The picks at a glance

Load rating and weight are the two numbers that decide which of these is right for you. Capacity matters less than people expect, and fit is not a number at all.

PickCapacityWeightLoad it suitsBest for
Osprey Atmos AG 6562-68 L by size~4 lb 9 oz25-40 lbMost people
Gregory Baltoro 6565 L~4 lb 12 oz - 5 lb 4 ozUp to 50 lb (stated)Heavy loads, long trips
Osprey Exos 5858 L~2 lb 13 ozUp to ~30-35 lbLight, with a real frame
Granite Gear Crown3 6060 L~2 lb 5 oz25 / 35 / 43 lb by frame setupLightest pack here
TETON Sports Scout 340055 L~4.5 lbUp to ~30 lbA first pack

02 — Selection criteria

Fit first: the one thing no spec sheet can tell you

A backpacking pack is a load-transfer device. Its entire job is to move the weight off your shoulders and onto your hip bones, where your skeleton can carry it. Every other feature is secondary to whether the pack is the right length for your back, because a pack that is too long or too short cannot make that transfer no matter how good the suspension is.

The measurement that matters is torso length, not height. It is the distance from your C7 vertebra -- the bony bump at the base of your neck when you tip your head forward -- down to the top of your iliac crest, the shelf of your hip bones level with your navel. Have someone else measure it; measuring your own back is how people end up an inch out. Most brands publish a torso range for each size, and the ranges overlap, so a measurement near a boundary means either size can work.

The second measurement is your hip circumference at the iliac crest, not at your waist or where your jeans sit. The hipbelt has to close over the crest and above it, because the crest is the shelf doing the work. A belt that sits on your waist slides down under load, and then you are carrying thirty pounds on your shoulders with a nylon band flapping around your middle.

Then load the thing. Any shop that sells packs will put 25 or 30 pounds of sandbags in one and let you walk around. Ten minutes of walking tells you more than every review on the internet, including this one. What you are checking for: does the hipbelt carry the weight when you loosen the shoulder straps, do the load lifters angle up from the shoulder straps rather than sideways, and does anything press on a bone.

  • Measure torso length, not height. Two people the same height can be two pack sizes apart. Height is not a proxy.
  • Fit the hipbelt over the iliac crest. If it sits at your natural waist, the pack will transfer nothing and you will blame the suspension.
  • Load it before you decide. Empty packs all feel fine. Twenty-five pounds reveals every pressure point in about eight minutes of walking.
  • Check the women's version. Shorter torso ranges, narrower shoulder strap spacing and differently shaped hipbelts are a genuine fit difference, not a color swap.

03 — Sizing

How much capacity do you actually need?

Capacity is the spec most people over-buy. The honest rule is that pack volume should follow the gear you own, because the bulkiest items -- sleeping bag, pad, shelter and food -- set the floor, and nothing you do to the pack changes that.

For most people with mid-range gear, a weekend is 40 to 50 liters, three to five days is 55 to 65 liters, and anything above 70 liters is for winter trips, bear canisters, carrying a share of someone else's kit, or photography gear. If you own a compressible down bag and a compact shelter, you can drop a tier from those numbers. If your sleeping bag is synthetic and your tent is a three-person dome, add one.

The failure mode of buying too big is not obvious until the third trip: a half-empty pack carries badly. The load shifts around inside, the compression straps cannot cinch it into a stable shape, and the weight ends up away from your back where it has the most leverage on your shoulders. A full 58-liter pack carries better than a two-thirds-full 75-liter pack of the same weight, every time.

Is 65 liters too big for a weekend?

Slightly, but it is the most common compromise and a reasonable one. If you will do both weekends and week-long trips and only want one pack, 60 to 65 liters with good compression straps is the right single purchase. Cinch it down for the short trips.

Can I use a 40-liter pack for overnights?

Yes, if your gear is compact. A 40-liter pack for an overnight is comfortable with a compressible bag, an inflatable pad and a one-person shelter, and impossible with a synthetic bag and a self-inflating pad. Pack your actual gear into a duffel and measure it before deciding.

Do external pockets count toward the capacity?

Sometimes. Brands differ on whether a listed liter figure includes lid and stretch pockets, which is part of why two 60-liter packs can hold visibly different amounts. Compare pack bodies, not headline numbers, when the difference matters.

What if I fly with my pack?

A multi-day pack checks fine, with two precautions: cinch or remove the external straps so nothing catches in a baggage system, and put a tracker inside it, because a soft bag with no hard shell is exactly the kind of luggage that goes missing. See best luggage trackers for which one to buy, and best travel backpacks if flying is the main use rather than the trail.

Should I buy a bigger pack for winter?

Usually, yes. Winter loads add a warmer bag, more insulation, more fuel and often a bulkier shelter. Most people who do both end up with a 65-liter pack for three seasons and either a 75-liter pack or very aggressive compression for winter.

04 — The mechanism

Frames, suspension and what they actually do

Every pack in this list is doing the same mechanical trick: taking a load that wants to hang off your shoulders and routing it down a rigid structure into a belt sitting on your hips. The differences are in how rigid that structure is and how much weight it can route before it flexes.

An internal frame -- an aluminum perimeter wire, a plastic framesheet, or both -- is what makes that transfer possible. A frameless pack relies on the packed contents themselves for structure, which works well below roughly 20 to 25 pounds and badly above it. The Crown3 is interesting precisely because it lets you move between the two and tells you what each configuration is rated for.

A ventilated or tensioned backpanel, like Osprey's Anti-Gravity mesh and AirSpeed panel, suspends a mesh sheet a few inches off the frame so air moves between the pack and your back. It is a real comfort improvement in heat and a real stability cost: holding the load further from your spine gives it more leverage, which you notice on steep, technical ground. There is no free version of that trade, and brands that imply otherwise are selling.

Load lifters are the small straps running from the top of the shoulder straps up to the frame. Tensioned correctly they should rise at roughly a 45-degree angle, pulling the top of the pack toward you. If they run flat or downward, the pack is too long for your torso, and no amount of strap adjustment fixes that.

05 — Honest limits

What we did not test, and what that means

We have not carried these five packs on the same route with the same load. A valid comparison needs identical weight, identical packing, the same terrain and the same person, repeated -- and we have none of that. So there are no mile counts, no hour figures and no comfort scores from us on this page, and there is no star rating.

What the specs here come from: capacities, listed weights, frame descriptions, fabrics and stated load ratings are taken from manufacturer product listings and published specifications. Where sources disagreed -- Osprey's maximum recommended load for the Atmos AG is quoted variously as 40 and 50 pounds across retailers -- we have given the range the specs support rather than picking the flattering number. The load figures in the comparison table above are the ranges these packs are designed and rated for, not results we measured.

The fit guidance is standard practice rather than a product claim, and it is the part of this page we would most want you to act on: a correctly fitted mid-range pack beats a badly fitted premium one every time. We publish no prices -- packs are discounted heavily and seasonally, and a number here would be wrong within weeks. Every buy link opens a live Amazon search for the model named. Full method at how we pick.

Questions

Frequently asked

What is the best backpacking backpack for most people?
The Osprey Atmos AG 65. Its Anti-Gravity suspension carries 25 to 40 pounds comfortably, both the torso length and hipbelt adjust so an approximate measurement still fits, and the ventilated backpanel matters more in summer than most specs do.
What size backpacking pack do I need?
Roughly 40 to 50 liters for weekends, 55 to 65 liters for three to five days, and 70 liters or more only for winter, bear canisters or group gear. Compact, compressible gear drops you a tier; bulky synthetic gear adds one.
How do I measure my torso for a backpack?
Measure from the bony bump at the base of your neck (C7) down to the top of your hip bones, level with your navel. Have someone else do it. That length, not your height, decides your pack size.
Is a lighter backpacking pack always better?
No. Light packs shed padding and frame stiffness, which is why they have lower load ceilings. A 2.5-pound pack carrying 40 pounds is less comfortable than a 4.5-pound pack carrying the same load. Match the pack to your real load weight.
Do I need a women's-specific backpacking pack?
It is worth trying. Women's versions typically have shorter torso ranges, narrower shoulder strap spacing and a differently shaped hipbelt. Those are real fit differences, and plenty of people fit better in the other version than the one labeled for them.
Can I use a backpacking pack as a travel bag?
It works, but awkwardly. Top-loading packs are poor for travel organization and the external straps catch on baggage systems. A front-loading travel backpack is the better tool if flying is the main use.
How much should a loaded backpacking pack weigh?
A commonly cited guideline is about 20 percent of your body weight for multi-day trips, though fitness, terrain and trip length all move that. The more useful target is reducing the load, not finding a pack that hides it.

References

Back up a level

This page sits in Trail -- what you carry on your back: packs, poles, water, warmth.

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