Osprey Tropos 32 vs. Osprey Sirrus 24
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| Osprey Tropos 32 | Feature | Osprey Sirrus 24 |
|---|---|---|
| Storage | ||
| 4 | Compression | 4 |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top | Passport | top |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| Y | Hip Belt | Y |
| Y | Sternum Strap | Y |
| Inside | ||
| 15in | Laptop | N |
| 4 | Main Compartments | 3 |
| Y | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | Y |
| 2, side | Water Bottle Holder | 2, side |
| N | Water Resistant | N |
| Material | |
| bluesign® APPROVED 210D recycled honey comb contrast nylon, PFAS-free DWR | bluesign® APPROVED 210D recycled honey comb nylon, PFC/PFAS-free DWR |
Key differences between the Osprey Tropos 32 and Osprey Sirrus 24
- Laptop sleeve: 15in on the Osprey Tropos 32; No on the Osprey Sirrus 24.
- Main compartments: 4 on the Osprey Tropos 32; 3 on the Osprey Sirrus 24.
- Built-in organizer: Yes on the Osprey Tropos 32; No on the Osprey Sirrus 24.
- Rain cover: No on the Osprey Tropos 32; Yes on the Osprey Sirrus 24.
Both have: compression straps, passport pocket, 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. 26 accept both. 0 accept only the Osprey Tropos 32, and 47 accept only the Osprey Sirrus 24.
Only the Osprey Sirrus 24 fits
Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Astana, Air Caraibes, Air France, Air India, Air Mauritius, Air Nostrum, All Nipon Airways, ANA, Atlas Global, Boliviana de Aviacion, British Airways, Conviasa, Copa Airlines, Czech Airlines, EL AL, Finnair, Frontier Airlines, Gol Linhas Aereas, Iberia, Indigo, Interjet, Iran Air, Iran Aseman Air, Japan Airlines, Jet Airways, Jet2, Kenya Airways, KLM, Kuwait Air, LATAM , Middle East Airlines, Monarch Airlines, Onur Air, Peach, PenAir, Sky Airlines, Southwest Airlines, Spirit Airlines, Thai Airways, Travel Service Airlines, Uzbekistan Air, WOW Airlines.
Osprey Tropos 32 vs. Osprey Sirrus 24: which should you pack?
The Osprey Tropos 32 carries 8L more than the Osprey Sirrus 24 (32L vs. 24L), while the Osprey Sirrus 24 is the lighter pack at 1.2kg (vs. 1.3kg). For carry-on flexibility, the Osprey Sirrus 24 fits 39% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Osprey Tropos 32; if you want to travel lighter, the Osprey Sirrus 24 is the better call.