A good 40L backpack is the one bag many men use for everything: weekend trips, long hikes and work travel. The best one depends on which of those you do most.
We picked men’s and unisex 40L packs with comfortable harnesses, longer torso ranges and features that suit a variety of trips.
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Quick Picks
- Best for hiking: Osprey Kestrel LT 35
- Best for travel: Osprey Farpoint 40 Men’s
- Best for climbing: Osprey Mutant 38
- Best for city travel: Thule Landmark 40L
- Best duffel: Osprey Transporter Duffel 40
- Best work bag: YOREPEK Large Laptop Backpack
- Best budget hiking: Naturehike Rock 40+5L
Comparison Table
| Product | Best for | Capacity | Standout feature | |
|---|---|---|---|---|
| Osprey Kestrel LT 35 | Best for hiking | 35L | Adjustable torso, raincover | View |
| Osprey Farpoint 40 Men’s | Best for travel | 40L | Carry-on ready, load-lifting frame | View |
| Osprey Mutant 38 | Best for climbing | 38L | Dual ToolLocks, rope carry | View |
| Thule Landmark 40L | Best for city travel | 40L | Hidden CashStash, LoopLocks | View |
| Osprey Transporter Duffel 40 | Best duffel | 40L | NanoTough, lockable U-zip | View |
| YOREPEK Large Laptop Backpack | Best work bag | Large | 17-inch laptop sleeve | View |
| Naturehike Rock 40+5L | Best budget hiking | 40+5L | Internal frame, hydration-ready | View |
Detailed Reviews
1The Kestrel LT 35 is a classic top-loading rucksack with a men’s fit and an adjustable torso length, so you can dial it to your back instead of hoping a fixed size works.
Osprey gives it a fixed top lid with a zip pocket, stretch side pockets, a front shove-it pocket, trekking pole attachments and a side zip that reaches into the main compartment without unloading from the top. It ships with a raincover. At 35 liters it is the right size for long day hikes and efficient overnights where you carry a light sleep system.
Pros & Cons
What we like
- Adjustable torso length
- Side-zip access to main compartment
- Raincover included
Watch out for
- Men’s fit only in this listing
- 35L is tight for cold-weather overnights
Key Specs
- Capacity: 35 liters
- Fit: men’s, adjustable torso
- Loading: top lid plus side zip
- Raincover: included
- Extras: trekking pole attachment, shove-it pocket
2The Farpoint 40 is one of the most recommended one-bag travel packs for good reason. It meets most carry-on size limits, opens wide like a suitcase, and has a real load-lifting frame with a men’s-specific harness.
WingJacket compression straps cinch the pack down when it is not full, a direct-zip 3-1-1 pocket keeps liquids ready for the security line, and front and bottle pockets handle quick-grab items. It is not cheap, but it carries better than most travel backpacks because it borrows its suspension from Osprey’s hiking packs.
Pros & Cons
What we like
- Suitcase-style opening
- Real frame and hip belt
- 3-1-1 liquids pocket for security
Watch out for
- Premium pricing
- Hip belt adds bulk in the overhead bin
Key Specs
- Capacity: 40 liters
- Fit: men’s-specific
- Frame: load-lifting
- Compression: WingJacket
- Carry-on: meets most limits (check your airline)
3The Mutant 38 is Osprey’s alpine climbing pack. It has dual ToolLocks for ice axes, a rope carry, a snow-shedding back panel, glove-friendly buckles and a reinforced A-frame ski carry.
Strip off the removable top lid and other parts for summit pushes. Osprey lists it at 26.8 x 11.8 x 10.2 inches and 2.69 pounds. It is the pack we would choose for mountaineering routes where you carry tools and a rope rather than a big camp.
Pros & Cons
What we like
- Ice tool and rope carry
- Strippable for summit days
- Snow-shedding back panel
Watch out for
- Minimal organization by design
- 38L limits overnight gear
Key Specs
- Capacity: 38 liters
- Weight: 2.69 lb (brand listing)
- Size: 26.8 x 11.8 x 10.2 in
- Ice tools: dual ToolLocks
- Ski carry: A-frame
4The Thule Landmark 40L is a carry-on adventure travel pack with security features for cities and transit. A hidden CashStash pocket under the SafeZone holds a passport and cash, and LoopLocks secure zipper pulls to deter pickpockets.
It also fits a 15-inch MacBook and a 12.9-inch tablet. It is a strong choice for international trips where theft protection matters as much as capacity.
Pros & Cons
What we like
- Hidden passport and cash pocket
- LoopLocks deter pickpockets
- Laptop and tablet storage
Watch out for
- Premium pricing
- Heavier than ultralight packs
Key Specs
- Capacity: 40 liters
- Security: CashStash, LoopLocks
- Laptop: 15 in MacBook
- Tablet: 12.9 in
5The Osprey Transporter is a 40L duffel built from highly water-resistant NanoTough fabric. Osprey says it fits airline carry-on requirements, and a large lockable U-zip opens the main compartment wide.
Removable backpack straps let you carry it hands-free between the car and the trailhead or the terminal. It is our pick for travelers who want Osprey quality in a duffel.
Pros & Cons
What we like
- Water-resistant NanoTough fabric
- Lockable U-zip
- Carry-on size
Watch out for
- Backpack carry is basic
- Premium pricing
Key Specs
- Capacity: 40 liters
- Fabric: NanoTough
- Opening: lockable U-zip
- Carry: backpack straps, handles
6YOREPEK’s large laptop backpack is among the most bought travel and work backpacks on Amazon. A padded sleeve fits up to 17-inch laptops, and the bag has three compartments and more than ten pockets.
YOREPEK lists it at 17.5 x 13 x 8.5 inches. Two side mesh pockets hold a bottle or umbrella, and the front organizer keeps pens, cards and keys sorted. It is ideal for students and business travelers.
Pros & Cons
What we like
- Fits up to 17-inch laptops
- 10+ pockets
- Value pricing
Watch out for
- Smaller than true 40L travel bags
- Not built for trails
Key Specs
- Laptop: up to 17 in
- Size: 17.5 x 13 x 8.5 in (brand listing)
- Compartments: 3
- Pockets: 10+
7Naturehike’s Rock pack combines a 40-liter body with a 5-liter extension, an internal frame, a rain cover and a hydration port. The brand lists it at 22 x 10.2 x 7.1 inches.
Ergonomic shoulder straps and a padded back panel make it a real trekking pack rather than a stretched daypack. Naturehike is a well-known camping brand, and this pack sits between budget no-names and premium Osprey models.
Pros & Cons
What we like
- Internal frame
- 40L plus 5L extension
- Rain cover and hydration port
Watch out for
- Fit range not as adjustable as premium packs
- Fewer reviews than Osprey
Key Specs
- Capacity: 40 + 5 liters
- Size: 22 x 10.2 x 7.1 in (brand listing)
- Frame: internal
- Rain cover: included
- Hydration: compatible
How We Chose
We compared published specs, materials, fit ranges and features for more than 40 backpacks in the 30 to 50 liter range, then read verified owner feedback to spot durability and comfort problems that spec sheets miss. We did not receive free products, and we do not claim hands-on testing. TOR Scores combine published specs, verified owner feedback and overall value.
Choosing a 40L Backpack for Men
Men’s-specific packs usually have longer torso ranges, wider shoulder straps and straighter hip belts. For taller men or broad shoulders, a dedicated men’s fit like the Osprey Farpoint 40 or Kestrel LT 35 can be more comfortable than a unisex pack.
- Torso length. Most men fall between 17 and 21 inches. If you are over six feet, check the upper limit.
- Load. If you carry heavy camera gear, climbing kit or water, choose a framed pack with a padded hip belt.
- Style. For travel and work, a clean, dark pack like the Thule Landmark or tomtoc Navigator blends in at the office and airport.
How to Choose a 40L Travel Backpack
A 40L travel backpack is the classic one-bag size. It holds a week or more of clothes and usually still fits within carry-on limits, so you skip checked-bag fees and baggage-claim waits.
- Carry-on size. Many US airlines allow carry-on bags around 22 x 14 x 9 inches, but international and budget carriers are often stricter. Always check your airline before you fly.
- Clamshell opening. A zip that opens the bag like a suitcase makes packing and finding items much easier than a top-loader.
- Compression. Straps that cinch a half-full bag keep it inside size limits and stop contents from shifting.
- Laptop sleeve. A separate sleeve speeds up security screening and protects your device.
- Harness. Padded straps, a sternum strap and a hip belt make a big difference when you walk from the station to your hotel.
- Security. Lockable zippers and hidden pockets help in crowded places.
Packing cubes turn a 40L bag into a tidy, easy-to-unpack system. Roll clothes rather than fold them, and wear your bulkiest shoes and jacket on travel days.
Related guides: best 40L backpack for men, best 40L backpack for hiking, best 40L backpack for travel, best 40L backpack for mountaineering. Browse every pick in our backpacks category.
Sources and further reading: National Park Service: the Ten Essentials, Leave No Trace: the 7 Principles and National Park Service: camping basics. Product specs come from brand listings on Amazon; always check your airline’s current carry-on size rules before you fly.
Frequently Asked Questions
How do I know what size backpack I need?
Measure your torso from the C7 vertebra at the base of your neck to the top of your hip bones. Match that number to the pack’s size chart or adjustable range.
Is a 40L backpack carry-on size?
Many 40L travel packs are designed around common carry-on limits of about 22 x 14 x 9 inches, but airlines differ. Check the listed dimensions and your airline’s rules, and compress the pack before you fly.
Do I need a frame in a 40L backpack?
If you will carry more than about 20 pounds, yes. An internal frame and padded hip belt move weight onto your hips. For lighter day hikes and travel, a frameless pack is fine.
Can I fit a laptop in a 40L hiking backpack?
Usually in the hydration sleeve, but it will not be well protected. If you travel with a laptop, choose a travel pack with a padded laptop compartment.
How much should a 40L pack weigh empty?
Frameless 40L packs often weigh around 1 to 2 pounds, while framed hiking and travel packs usually weigh 2.5 to 4 pounds. Wheeled backpacks are heavier, often 4 to 6.5 pounds.
Final Verdict
For men who hike, the Osprey Kestrel LT 35 is the best 40L-class pack. For travel, choose the Osprey Farpoint 40. Climbers should look at the Mutant 38.
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