Mammut Aenergy 12 vs. Deuter Vertrail 16

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

Mammut Aenergy 12

Front facing view of the Mammut Aenergy 12
Capacity12 L
Weight0.3 kg
Dimensions46×23×17 cm
Airline fit95%
Price$80

Feature by feature

Mammut Aenergy 12FeatureDeuter Vertrail 16
Storage
N Compression N
None Expanded Capacity None
1 Opening 2
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt N
removable Sternum Strap removable
Inside
N Laptop N
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
N Water Resistant Y
Material
100% Polyamide220D PA PLAIN TPU

Deuter Vertrail 16

Capacity16 L
Weight0.5 kg
Dimensions51×23×18 cm
Airline fit90%
Price$210

Key differences between the Mammut Aenergy 12 and Deuter Vertrail 16

Both have: backpack straps, sternum strap.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 170 accept both. 9 accept only the Mammut Aenergy 12, and 0 accept only the Deuter Vertrail 16.

Only the Mammut Aenergy 12 fits

Air Niugini, American Eagle, Belavia, easyJet, Etihad Airways, Qatar Airways, Ravn Alaska, Regional Express, Virgin Australia.

Mammut Aenergy 12 vs. Deuter Vertrail 16: which should you pack?

The Deuter Vertrail 16 carries 4L more than the Mammut Aenergy 12 (12L vs. 16L), while the Mammut Aenergy 12 is the lighter pack at 0.3kg (vs. 0.5kg). For carry-on flexibility, the Mammut Aenergy 12 fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Deuter Vertrail 16; if you want to travel lighter, the Mammut Aenergy 12 is the better call.