Mammut Nirvana 28 vs. Osprey Tempest 33
Two carry-on travel backpacks, compared spec for spec.
Mammut Nirvana 28
| Capacity | 28 L |
| Weight | 1.1 kg |
| Dimensions | 50×30×19 cm |
| Airline fit | 92% |
| Price | $220 |
Feature by feature
| Mammut Nirvana 28 | Feature | Osprey Tempest 33 |
|---|---|---|
| Storage | ||
| 6 | Compression | 6 |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| front | Passport | top |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| Y | Hip Belt | Y |
| Y | Sternum Strap | Y |
| Inside | ||
| N | Laptop | N |
| 3 | Main Compartments | 2 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| N | Water Resistant | Y |
| Material | |
| 90% Polyamide, 10% Polyester | bluesign® APPROVED, 100% recycled 100D high-tenacity nylon w/ dobby check ripstop, DWR treatment made without PFAS |
Key differences between the Mammut Nirvana 28 and Osprey Tempest 33
- Opening: Clamshell on the Mammut Nirvana 28; Other on the Osprey Tempest 33.
- Passport pocket: Front on the Mammut Nirvana 28; Top on the Osprey Tempest 33.
- Main compartments: 3 on the Mammut Nirvana 28; 2 on the Osprey Tempest 33.
- Water resistant: No on the Mammut Nirvana 28; Yes on the Osprey Tempest 33.
Both have: compression straps, backpack straps, hip belt, 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. 2 accept both. 171 accept only the Mammut Nirvana 28, and 0 accept only the Osprey Tempest 33.
Only the Mammut Nirvana 28 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, 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, 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, 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, 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 Atlantic, Volotea, WestJet, WOW Airlines, Xiamen.
Mammut Nirvana 28 vs. Osprey Tempest 33: which should you pack?
The Osprey Tempest 33 carries 5L more than the Mammut Nirvana 28 (28L vs. 33L), while the Mammut Nirvana 28 is the lighter pack at 1.1kg (vs. 1.2kg). For carry-on flexibility, the Mammut Nirvana 28 fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Osprey Tempest 33; if you want to travel lighter, the Mammut Nirvana 28 is the better call.