Choosing the Right RTW Backpack for Long-Term Travel

Last updated on October 25, 2026 by Shannon

The backpack debate is a big one in the travel community, and unlike some issues, this one warrants debate because the backpack you choose can have a huge impact on how much you enjoy your trip around the world … or anywhere for that matter.

As a general piece of advice, most long-term backpackers today do better with a single 35-45L carry-on-sized pack than anything bigger—airlines have gotten stricter about sizing, and the gear’s gotten lighter too. That said, if you’re covering multiple climates, traveling with a kid, or just prefer the buffer space, a 50-55L pack plus a small daypack still works well—that’s closer to what I use myself these days.

But that’s in general; let’s get into the nitty-gritty specifics of picking the right backpack for you.

Backpacks and Bags I’d Actually Recommend Right Now

I get asked constantly which backpack to actually buy, so here’s what I’d point you toward today—mixing my own long-term gear with one pick I haven’t personally carried but trust based on a friend’s years of use and a stack of reviews that back her up.

Price	Bag	Size	Torso/Fit	Why
$299	Eagle Creek Tour Travel Pack 55L	55L (62L expanded)	Adjustable padded harness; no published torso-length spec	My bag since 2008—this is the current version of what I’ve carried for 18 years.
$225	Osprey Stratos 34 (men’s) / Sirrus 34 (women’s)	34L	Adjustable, fits 17-22″ torsos	Current version of the Osprey I carried on the Camino de Santiago.
$230	Cotopaxi Allpa 35	35L	Rigid, fixed back panel—no adjustable harness documented; try it on if you’re tall	Haven’t carried one myself, but a well-traveled friend is an evangelist, and the reviews back her up on durability and the clamshell/duffel conversion.
$229	Timbuk2 Copilot wheeled backpack	—	Wheeled only, no backpack straps	My actual carry-on. Mine’s 15 years old—the only repair it’s ever needed was a $30 handle, done in about an hour.
$139	The North Face Surge	31L	—	Mine’s held up since 2008, but current owner reviews report ripped straps and early seam failure versus older models—if buying new, don’t assume 2008-era durability.

Considerations for Carry-On Sized Backpacks

Know the size and weight restrictions for each airline you’ll use.

Check the carry-on size restrictions of the airlines you’ll be flying with. Most airlines have specific dimensions and weight limits for carry-on luggage. And what’s crazy is that sometimes they are just an inch off of each other. So a backpack that meets EasyJet’s carry on guidelines may not meet the guidelines for RyanAir, for example. Ensure that the backpack you choose falls within the international carry on limits to avoid any hassles or extra fees.

Does the backpack have carry-on compatibility features?

Look for carry-on-specific features too, like a TSA-friendly laptop compartment and a dedicated document sleeve—they make airport security and day-to-day organizing easier.

Look for backpacks with compartments and organizational features.

Multiple compartments help too, even if you’re using packing cubes to organize your bag (and you should!)—it keeps things close and handy without unpacking everything to find what you need.

Buy travel-sized containers.

You’ll need to stay at the carry-on limit for liquids if you’re traveling the world with a carry on backpack. This can mean chucking out perfectly good shampoo or bug spray, and no pocket knives too. The best way to keep from throwing away items is to refill from guesthouses or hotels along the way—just use your own travel containers and refill whenever you find extra offered for free at your accommodation.

Picking Backpack Sizes: What to Consider

I took a 52L backpack from Eagle Creek (that one on Amazon is the latest version of my beloved bag and I own it too!) and 35L laptop daypack from the North Face when I left on my formal round the world trip back in 2008. Now, for any trip in the two week or less range, and to a single climate, I just use my 35L daypack as an under-the-seat bag. This habit opened my eyes to traveling lighter and here’s some of the chief sizing issues and benefits to consider if you think you might want to pack for your trip in a backpack under 40L:

• How many climates do you need to pack for? It’s arguably easier to pack for a mostly summer wardrobe with a few warm weather contingency clothes. But if you’re traveling through snow and sand, that may mean a bigger backpack is ideal.
• How big is your frame? And I mean you, not your pack. Buy a backpack meant for your stature and your gender. Female packs generally fit differently—the waist and chest straps are purpose-built for a woman’s shape. Taller frames can more easily pull off a larger pack and more weight.
• What is your planned style of travel? Backpackers will really and truly benefit from a light pack—less space means less weight on your back week after week. You may find yourself hiking around to find your next hostel, or running to catch a train in India—most pointed, travel days are so much easier with less stuff to cart from place to place.
• Smaller bags mean more safety. The smaller your backpack, the more likely you can keep an eye on it at all times. Larger packs get hefted onto bus rooftops and are targets for theft. If it fits under your seat, however, it’s a lot safer and you’ll rest easier knowing it’s close by.
• Smaller bags might mean less organization. There is such thing as picking too small of a backpack. If you are constantly sitting on your bag to zip it clothes, or if clothes explode out when unzipped, then you either packed too much, or someone convinced you to go lighter than you can manage. I use a packing cube system to pack more efficiently, but I also just us a bigger backpack than some hardcore travelers.

Backpacks vs Wheeled Luggage for Long-Term Travel

This is where I make a brief mention of the rolling/trolley/wheeled suitcases first. There is an argument for using these—some travelers have a bad back, others plan to travel mostly through one country and with long stays in one place. For that, a rolling suitcase can work wonders.

On the flip side though, round the world travel is a whole different ball game and the most round the world travelers are happy with the mobility and ease that a well-fitting backpack gives them. After six years on the road, I bought this fantastic, highly recommended rolling suitcase and I use it when I go on trips where I’ll be traveling more slowly. I still use the backpack if I know I’ll move quickly, such as European train travel I did with my toddler son in spring 2023—I managed to back us both into a carry on backpack.

How to Pick the Right Backpack Shape

The basic styles of backpacks include top-loading rucksack packs, front loading zippered packs, and some sort of in-between shape.

Rucksack, Top Loading Backpacks

I have yet to hear a convincing pitch for going with a traditional top-loading backpack that offers no other entrance to the bag. The main issue I have with these backpacks is the fact that you have to unload every single thing in your pack to get to something at the bottom—this makes for a personal annoyance, and makes it harder to keep your belongings organized. It’s also poor form to explode your belongings all over a dorm room because you went with a rucksack backpack and now can’t find something.

When I walked the Camino de Santiago in Spain, I actually bought one of these packs for the first time. And it really worked for our trip. But note that the gorgeous Osprey backpack I bought and used had a entrance at both the top and bottom of the pack, and that makes a world of difference.

Front-loading, Lay Flat Zippered Packs

These backpacks are like giant versions of the backpacks you used secondary school. They zip around in a u-shape and give you access to the majority of your backpack’s contents in one fell swoop of the zipper.

One drawback is that they have to lay flat on the floor to open, meaning you take up a wee bit more space in a shared dorm. I’m partial to these packs. Both of my packs use this backpack style and I find the front-loading backpacks more conducive to organization (something already hard enough to keep up on the road) and speed (I can re-pack like a fiend!).

Hybrid, Rucksack with Front-loading Zippers

I’ve seen these in the wild, and they seem to do pretty well for their owners. They have few drawbacks and nicely marry the two designs. This is also a good backpack option for backpackers and long-term travelers.

What to Look for in a Backpacking Backpack

Durability

A backpack for long-term travel needs to withstand the rigors of constant use. My original Eagle Creek backpack from 2008 is still in usable shape. Sure, the fabric faded a bit, but there are no rips and it gets my gear where it needs to go.

Doo-dads and Extras

• Backpacks with compression straps on the outside of the backpacks can make handy ways to strap on any extra gear, a sleeping bag, or odds and ends. It also helps secure the bag and could help ward off spillage if a zipper broke.
• Some backpacks also come with hidden zipper compartments that make an ideal place to put your important documents and perhaps stash a safety wad of cash.
• I love that my larger backpack comes with a built-in flap that zips around to cover the backpack’s straps—ideal for checking the bag on airplanes—it then folds back into the underside of the back.
• A backpack with a rain cover built in is ideal—either way you need one though. I bought one and it was pinched in India when I landed in Mumbai. They’re handy and, again, ones built-in and attached to your pack get bonus points for ease.

How to Ensure Your Backpack Fits Right

1. Try it on before buying: Visit a store and try on different backpacks to see how they feel on your back. Pay attention to how the weight is distributed and make sure the backpack sits comfortably on your hips.
2. Adjust the straps: Once you have your backpack, adjust the shoulder straps and hip belt to achieve a snug fit. The shoulder straps should be tightened enough to keep the backpack close to your back but not so tight that they dig into your shoulders. The hip belt should rest comfortably on your hips, supporting the majority of the weight. When the hip belt is secure, the should straps should actually sit really lightly on your shoulders—they are not there to hold weight in a backpacking backpack.
3. Load distribution: When packing your backpack, distribute the weight evenly to maintain balance. Heavier items should be placed close to your back and in the lower part of the backpack. This will prevent strain on your shoulders and maintain stability while walking.
4. Check the torso length: Some backpacks come in different sizes to accommodate different torso lengths. Actually measure your torso length and choose a backpack that matches or adjust the backpack’s suspension system to fit your torso properly. This ensures that the weight is distributed correctly and reduces the risk of back pain. When you’re backpacking for months or years, you just can’t get this step wrong.
5. Secure the sternum strap: Most backpacks have a sternum strap that connects the two shoulder straps across your chest. Fasten it and adjust it to a comfortable position. This strap helps stabilize the backpack and prevents it from shifting while you’re on the move. It can make a world of difference in how the backpack sits on you once you’re loaded down and fully packed.
6. Walk around and test the fit: After adjusting all the straps, walk around with your fully packed backpack to test the fit and comfort. Make sure there are no pressure points or areas that cause discomfort during movement. Pay attention to any rubbing or chafing, especially on your shoulders, hips, or back. If you notice any discomfort or imbalance, readjust the straps or try different backpacks until you find the perfect fit. Ask the sales representative at the store for help if you can’t get it to fit right—either you’re doing something wrong, or it’s not the right backpack for you.
7. Test the mobility: Move around in different ways to assess the mobility of the backpack. Try bending over, squatting, and walking up and down stairs. A well-fitted backpack should allow you to move freely without restricting your range of motion or throwing off your balance.
8. Make adjustments along the way: As you travel and your needs change, periodically reassess the fit of your backpack. Your body may adjust or require different adjustments over time. Take the time to readjust the straps and make any necessary modifications to ensure continued comfort and support. I lost weight on the road, and I was glad that my backpack cinched down tighter over time, while others gain weight and might need a backpack with a bit more room to grow with you.

Traveling with a Kid: What Changes

Packing for one is a solved problem. Packing for yourself and a kid comes down to one question: is he still using a stroller?

When my son was small, we traveled with a YoYo-type carry-on-size stroller, since a wheeled bag is useless when you need your hands free for a stroller. As he got a bit older, we moved to a Trunki for a few years—he loved it, and I’d pair it with either the wheeled Timbuk2 Copilot or the Eagle Creek backpack, checking one or both through the airport depending on the trip. We sold the Trunki before his 5th birthday once he outgrew it, and now travel with just the Copilot, with the Eagle Creek backpack as backup when we need the extra room—cold weather, toys, that kind of thing.

I never carried a dedicated diaper bag, either—the Surge doubled as one, with a foldable changing mat tucked into a side pocket instead of a separate bag to track.

If you’re traveling with a toddler, expect to carry their stuff regardless of what’s marketed as a “kid travel backpack.” No bag changes that math—you’re carrying it either way.

That’s Overwhelming: Some Last Thoughts

Go as small as you think you can manage. The majority of backpackers I’ve met over 15 years of travel all agree that they over-packed for their first backpacking trip. My long-term travel packing list includes my initial packing list, along with updates from the road as I mailed items home and bought others as I progressed through my yearlong trip—and notes and advice gleaned from nearly two decades of travel since.

And buy for comfort above all else. I can’t emphasize that enough. Go to your local outdoors store and try on packs. Ask questions. Get the salesperson to help you. Put some weight in the pack and walk around. Maybe they don’t have the color you like, or there are some fun features on one back that just doesn’t fit as well as the backpack in a different color. Go for comfort.

Sure, look online and see if you can get the bag that fits and is also one you love. But this is an expensive purchase so take time and buy one that fits your body well.

And then stop worrying about it! You have a lot on your plate if you’re planning a trip, so happy planning and safe travels! :)

Helpful Backpacking Resources

• Round the World Travel Packing: In this post I talk more about the backpacks I use personally, and provide a detailed list of what I packed and found useful on the road.
• Packing Cube System: Pack-It 3 Piece Set: Once you have your backpack selected it is time to turn your energies towards packing and finding a way to store your belongings neatly. Packing cubes are great way to save space and organize your clothing and gear.
• The Carry-On Traveller: The Ultimate Guide to Packing Light: Traveling with only a carry-on is not for everyone, but if you are planning to pack light this book has a lot of helpful tips and tricks. Even after years of traveling, I found some really nuggets in this book when I read it.