Mammut Nirvana 28 vs. REI Co-op Commuter Pack

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 28FeatureREI Co-op Commuter Pack
Storage
6 Compression 2
None Expanded Capacity None
1 Opening 1
front Passport top
N Passthrough N
Carry
Y Backpack Y
Y Hip Belt removable
Y Sternum Strap Y
Inside
N Laptop 15in
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% Polyester100% recycled oxford nylon

REI Co-op Commuter Pack

Capacity22 L
Weight0.7 kg
Dimensions43×27×16 cm
Airline fit96%
Price$90

Key differences between the Mammut Nirvana 28 and REI Co-op Commuter Pack

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. 173 accept both. 0 accept only the Mammut Nirvana 28, and 8 accept only the REI Co-op Commuter Pack.

Only the REI Co-op Commuter Pack fits

Air Tahiti, American Eagle, easyJet, Great Lakes Airlines, Gulf Air, Ravn Alaska, Regional Express, Virgin Australia.

Mammut Nirvana 28 vs. REI Co-op Commuter Pack: which should you pack?

The Mammut Nirvana 28 carries 6L more than the REI Co-op Commuter Pack (28L vs. 22L), while the REI Co-op Commuter Pack is the lighter pack at 0.7kg (vs. 1.1kg). For carry-on flexibility, the REI Co-op Commuter Pack fits 96% 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 REI Co-op Commuter Pack is the better call.