Mammut Aenergy 12 vs. Peak Design Outdoor Backpack 45L
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| Mammut Aenergy 12 | Feature | Peak Design Outdoor Backpack 45L |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | 45L |
| 1 | Opening | 1 |
| N | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside | ||
| N | Laptop | 16in |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | 4, side |
| N | Water Resistant | Y |
| Material | |
| 100% Polyamide | Ultralight Terra Shell™ 210D ripstop |
Peak Design Outdoor Backpack 45L
| Capacity | 35 L |
| Weight | 1.6 kg |
| Dimensions | 56×31×17 cm |
| Airline fit | 47% |
| Price | $330 |
Key differences between the Mammut Aenergy 12 and Peak Design Outdoor Backpack 45L
- Laptop sleeve: No on the Mammut Aenergy 12; 16in on the Peak Design Outdoor Backpack 45L.
- Water bottle pockets: No on the Mammut Aenergy 12; 4, side on the Peak Design Outdoor Backpack 45L.
- Water resistant: No on the Mammut Aenergy 12; Yes on the Peak Design Outdoor Backpack 45L.
Both have: backpack straps, 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. 88 accept both. 91 accept only the Mammut Aenergy 12, and 0 accept only the Peak Design Outdoor Backpack 45L.
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, China Eastern, 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.
Mammut Aenergy 12 vs. Peak Design Outdoor Backpack 45L: which should you pack?
The Peak Design Outdoor Backpack 45L carries 23L more than the Mammut Aenergy 12 (12L vs. 35L), while the Mammut Aenergy 12 is the lighter pack at 0.3kg (vs. 1.6kg). 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 Peak Design Outdoor Backpack 45L; if you want to travel lighter, the Mammut Aenergy 12 is the better call.