Mammut Nirvana 28 vs. Navigator-T66 Liteway Travel Laptop Backpack 40L

Two carry-on travel backpacks, compared spec for spec.

Mammut Nirvana 28

Front facing view of the Mammut Nirvana 28
Capacity28 L
Weight1.1 kg
Dimensions50×30×19 cm
Airline fit92%
Price$220

Feature by feature

Mammut Nirvana 28FeatureNavigator-T66 Liteway Travel Laptop Backpack 40L
Storage
6 Compression 4
None Expanded Capacity None
1 Opening 1
front Passport top, front
N Passthrough Y
Carry
Y Backpack Y
Y Hip Belt N
Y Sternum Strap Y
Inside
N Laptop 17in
3 Main Compartments 3
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
2, side Water Bottle Holder 2, side
N Water Resistant N
Material
90% Polyamide, 10% Polyester

Navigator-T66 Liteway Travel Laptop Backpack 40L

Front facing view of the Navigator-T66 Liteway Travel Laptop Backpack 40L
Capacity40 L
Weight1.2 kg
Dimensions52×33×22 cm
Airline fit70%
Price$81

Key differences between the Mammut Nirvana 28 and Navigator-T66 Liteway Travel Laptop Backpack 40L

Both have: backpack straps, sternum strap, water bottle pockets.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 133 accept both. 40 accept only the Mammut Nirvana 28, and 0 accept only the Navigator-T66 Liteway Travel Laptop Backpack 40L.

Only the Mammut Nirvana 28 fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, Etihad Airways, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Oman Air, Qatar Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.

Mammut Nirvana 28 vs. Navigator-T66 Liteway Travel Laptop Backpack 40L: which should you pack?

The Navigator-T66 Liteway Travel Laptop Backpack 40L carries 12L more than the Mammut Nirvana 28 (28L vs. 40L), while the Mammut Nirvana 28 is the lighter pack at 1.1kg (vs. 1.2kg). For carry-on flexibility, the Mammut Nirvana 28 fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Navigator-T66 Liteway Travel Laptop Backpack 40L; if you want to travel lighter, the Mammut Nirvana 28 is the better call.