Tom Bihn Aeronaut 45L vs. Mammut Aenergy 12
Two carry-on travel backpacks, compared spec for spec.
Tom Bihn Aeronaut 45L
| Capacity | 45 L |
| Weight | 1.4 kg |
| Dimensions | 56×36×23 cm |
| Airline fit | 45% |
| Price | $340 |
Feature by feature
| Tom Bihn Aeronaut 45L | Feature | Mammut Aenergy 12 |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| side | Passport | N |
| N | Passthrough | N |
| Carry | ||
| hideable | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| N | Laptop | N |
| 5 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | N |
| Material | |
| 1050 denier ballistic nylon OR ultralight 400d Halcyon/420d nylon ripstop 200 denier Halcyon/nylon ripstop fabric lining | 100% Polyamide |
Key differences between the Tom Bihn Aeronaut 45L and Mammut Aenergy 12
- Passport pocket: Side on the Tom Bihn Aeronaut 45L; No on the Mammut Aenergy 12.
- Backpack straps: Hideable on the Tom Bihn Aeronaut 45L; Yes on the Mammut Aenergy 12.
- Main compartments: 5 on the Tom Bihn Aeronaut 45L; 1 on the Mammut Aenergy 12.
- Water resistant: Yes on the Tom Bihn Aeronaut 45L; No on the Mammut Aenergy 12.
Both have: hip belt, sternum strap.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 85 accept both. 0 accept only the Tom Bihn Aeronaut 45L, and 94 accept only the Mammut Aenergy 12.
Only the Mammut Aenergy 12 fits
Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Niugini, Air Serbia, Air Seychelles, All Nipon Airways, American Eagle, ANA, Asiana Airlines, ATA Airlines, Austrian, Azerbaijan Airlines, Belavia, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, Caribbean Airlines, Cayman Airways, China Eastern, Croatia Air, Czech Airlines, easyJet, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, Fiji Airways, Flair Air, flybe, Gol Linhas Aereas, Great Lakes Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Oman Air, Pakistan International, Peach, Porter Airlines, Qatar Airways, Ravn Alaska, Regional Express, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Turkish Airlines, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, WestJet, Xiamen.
Tom Bihn Aeronaut 45L vs. Mammut Aenergy 12: which should you pack?
The Tom Bihn Aeronaut 45L carries 33L more than the Mammut Aenergy 12 (45L vs. 12L), while the Mammut Aenergy 12 is the lighter pack at 0.3kg (vs. 1.4kg). 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 Tom Bihn Aeronaut 45L; if you want to travel lighter, the Mammut Aenergy 12 is the better call.