Patagonia Ascensionist Pack 35L vs. Osprey Atmos AG 65
Two carry-on travel backpacks, compared spec for spec.
Patagonia Ascensionist Pack 35L
| Capacity | 35 L |
| Weight | 0.89 kg |
| Dimensions | 65×31×14 cm |
| Airline fit | 13% |
| Price | $179 |
Feature by feature
| Patagonia Ascensionist Pack 35L | Feature | Osprey Atmos AG 65 |
|---|---|---|
| Storage | ||
| removable | Compression | Y |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| N | Passport | |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| Y | Hip Belt | Y |
| removable | Sternum Strap | removable |
| Inside | ||
| N | Laptop | N |
| 1 | Main Compartments | 3 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | Y |
| N | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |
| Material | |
| 420-denier 100% recycled nylon ripstop, 70-denier 100% nylon ripstop | Nylon |
Osprey Atmos AG 65
| Capacity | 65 L |
| Weight | 2.2 kg |
| Dimensions | 87×41×39 cm |
| Airline fit | 0% |
| Price | $269 |
Key differences between the Patagonia Ascensionist Pack 35L and Osprey Atmos AG 65
- Compression straps: Removable on the Patagonia Ascensionist Pack 35L; Yes on the Osprey Atmos AG 65.
- Main compartments: 1 on the Patagonia Ascensionist Pack 35L; 3 on the Osprey Atmos AG 65.
- Rain cover: No on the Patagonia Ascensionist Pack 35L; Yes on the Osprey Atmos AG 65.
- Water bottle pockets: No on the Patagonia Ascensionist Pack 35L; 2 on the Osprey Atmos AG 65.
Both have: backpack straps, hip belt, sternum strap, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 0 accept both. 25 accept only the Patagonia Ascensionist Pack 35L, and 0 accept only the Osprey Atmos AG 65.
Only the Patagonia Ascensionist Pack 35L fits
Adria Airways, Air Europa, Air Koryo, Air New Zealand, Air Tahiti Nui, Azul Airlines, Azul Linhas, Caribbean Airlines, China Southern, Croatia Air, Cubana de Aviacion, Hainan Airlines, Korean Air, Philippine Airlines, Royal Air Morocco, Saudi Arabian Airlines, Sichuan Airlines, SilkAir, Silver Airways, Singapore Airlines, SpiceJet, TAAG Angola, TAM Airlines, Ural Airlines, Virgin America.
Patagonia Ascensionist Pack 35L vs. Osprey Atmos AG 65: which should you pack?
The Osprey Atmos AG 65 carries 30L more than the Patagonia Ascensionist Pack 35L (35L vs. 65L), while the Patagonia Ascensionist Pack 35L is the lighter pack at 0.89kg (vs. 2.2kg). For carry-on flexibility, the Patagonia Ascensionist Pack 35L fits 13% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Osprey Atmos AG 65; if you want to travel lighter, the Patagonia Ascensionist Pack 35L is the better call.