Kathmandu Hybrid 50L Trolley vs. Mammut Aenergy 12

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

Kathmandu Hybrid 50L Trolley

Front facing view of the Kathmandu Hybrid 50L Trolley
Capacity50 L
Weight3.12 kg
Dimensions70×37×30 cm
Airline fit1%
Price$449

Feature by feature

Kathmandu Hybrid 50L TrolleyFeatureMammut Aenergy 12
Storage
Y Compression N
None Expanded Capacity None
1 Opening 1
N Passport N
N Passthrough N
Carry
hideable Backpack Y
hideable Hip Belt removable
N Sternum Strap removable
Inside
N Laptop N
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
optional Rain-fly N
N Water Bottle Holder N
N Water Resistant N
Material
100% Polyester, 100% Nylon100% Polyamide

Mammut Aenergy 12

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

Key differences between the Kathmandu Hybrid 50L Trolley and Mammut Aenergy 12

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 1 accept both. 0 accept only the Kathmandu Hybrid 50L Trolley, and 178 accept only the Mammut Aenergy 12.

Only the Mammut Aenergy 12 fits

Adria Airways, Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Asia, Air Astana, Air Baltic, Air Canada, Air Caraibes, Air China, Air Europa, Air France, Air India, Air Koryo, Air Macau, Air Malta, Air Mauritius, Air New Zealand, Air Niugini, Air Nostrum, Air Serbia, Air Seychelles, Air Tahiti Nui, Air Wisconsin, AirAsiaX, Alaska Airlines, All Nipon Airways, Allegiant Air, American Airlines, American Eagle, ANA, Asiana Airlines, ATA Airlines, Atlas Global, Austrian, Avianca , Azerbaijan Airlines, Azul Linhas, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Boliviana de Aviacion, British Airways, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Caribbean Airlines, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, China Southern, CommutAir, Conviasa, Copa Airlines, Croatia Air, Cubana de Aviacion, Czech Airlines, Delta Airlines, Dragonair, easyJet, EL AL, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Finnair, Flair Air, flybe, Frontier Airlines, Garuda Indonesia, Gol Linhas Aereas, Great Lakes Airlines, Hainan Airlines, Hawaiian Airlines, Hong Kong Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Iran Aseman Air, Island Air, Japan Airlines, Jet Airways, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kenya Airways, KLM, Korean Air, Kulula, Kuwait Air, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Middle East Airlines, Monarch Airlines, Nordwind Airlines, Norwegian, Oman Air, Onur Air, Pakistan International, Peach, PenAir, Philippine Airlines, Porter Airlines, Qantas Airways, Qatar Airways, Ravn Alaska, Regional Express, Republic Airways, Royal Air Morocco, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Saudi Arabian Airlines, Scoot, Shandong Airlines, Shenzhen Airlines, Sichuan Airlines, SilkAir, Silver Airways, Singapore Airlines, Sky Airlines, Skywest, Inc., South African Airways, Southwest Airlines, SpiceJet, Spirit Airlines, SriLankan Airlines, Sun Country, Sun Express, Swiss Int'l Air Lines, TAAG Angola, TAM Airlines, TAP Air Portugal, TAROM, Thai Airways, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, Travel Service Airlines, TUI, Turkish Airlines, Ukraine International, United Airlines, Ural Airlines, Uzbekistan Air, Vietnam Airlines, VIM Airlines (Closed), Virgin America, Virgin Atlantic, Virgin Australia, Volotea, WestJet, WOW Airlines, Xiamen.

Kathmandu Hybrid 50L Trolley vs. Mammut Aenergy 12: which should you pack?

The Kathmandu Hybrid 50L Trolley carries 38L more than the Mammut Aenergy 12 (50L vs. 12L), while the Mammut Aenergy 12 is the lighter pack at 0.3kg (vs. 3.12kg). 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 Kathmandu Hybrid 50L Trolley; if you want to travel lighter, the Mammut Aenergy 12 is the better call.