Mammut Nirvana 28 vs. Exped Skyline 15

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 28FeatureExped Skyline 15
Storage
6 Compression 4
None Expanded Capacity None
1 Opening 1
front Passport front
N Passthrough N
Carry
Y Backpack Y
Y Hip Belt Y
Y Sternum Strap Y
Inside
N Laptop N
3 Main Compartments 4
N Organizer N
Outside
× Hard Shell ×
N Rain-fly Y
2, side Water Bottle Holder 2, side
N Water Resistant Y
Material
90% Polyamide, 10% Polyester210D Robic HD Ripstop Nylon, PU Coated 1500mm

Exped Skyline 15

Front facing view of the Exped Skyline 15
Capacity15 L
Weight1.1 kg
Dimensions52×26×16 cm
Airline fit89%
Price$130

Key differences between the Mammut Nirvana 28 and Exped Skyline 15

Both have: passport pocket, backpack straps, hip belt, 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. 167 accept both. 6 accept only the Mammut Nirvana 28, and 1 accept only the Exped Skyline 15.

Only the Mammut Nirvana 28 fits

Air Niugini, Belavia, Etihad Airways, Oman Air, Qatar Airways, Royal Jordanian.

Only the Exped Skyline 15 fits

Great Lakes Airlines.

Mammut Nirvana 28 vs. Exped Skyline 15: which should you pack?

The Mammut Nirvana 28 carries 13L more than the Exped Skyline 15 (28L vs. 15L), while the Mammut Nirvana 28 is the lighter pack at 1.1kg (vs. 1.1kg). 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 Mammut Nirvana 28; if you want to travel lighter, the Mammut Nirvana 28 is the better call.