Osprey Nebula 32 vs. Attitude Supply ATD1 Backpack
Two carry-on travel backpacks, compared spec for spec.
Feature by feature
| Osprey Nebula 32 | Feature | Attitude Supply ATD1 Backpack |
|---|---|---|
| Storage | ||
| 4 | Compression | 4 |
| None | Expanded Capacity | 55L |
| 1 | Opening | 1 |
| top | Passport | front |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| Y | Sternum Strap | removable |
| Inside | ||
| 16in | Laptop | 16in |
| 3 | Main Compartments | 2 |
| Y | Organizer | Y |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |
| Material | |
| 420D recycled nylon, PFAS-free DWR | Challenge Sailcloth Ecopak® EPLX600 |
Attitude Supply ATD1 Backpack
| Capacity | 23 L |
| Weight | 1.7 kg |
| Dimensions | 50×30×26 cm |
| Airline fit | 17% |
| Price | $523 |
Key differences between the Osprey Nebula 32 and Attitude Supply ATD1 Backpack
- Passport pocket: Top on the Osprey Nebula 32; Front on the Attitude Supply ATD1 Backpack.
- Sternum strap: Yes on the Osprey Nebula 32; Removable on the Attitude Supply ATD1 Backpack.
- Main compartments: 3 on the Osprey Nebula 32; 2 on the Attitude Supply ATD1 Backpack.
Both have: compression straps, backpack straps, hip belt, laptop sleeve, built-in organizer, water bottle pockets, water resistant.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 25 accept both. 0 accept only the Osprey Nebula 32, and 7 accept only the Attitude Supply ATD1 Backpack.
Only the Attitude Supply ATD1 Backpack fits
Copa Airlines, Frontier Airlines, Island Air, PenAir, Southwest Airlines, Spirit Airlines, Sun Country.
Osprey Nebula 32 vs. Attitude Supply ATD1 Backpack: which should you pack?
The Osprey Nebula 32 carries 9L more than the Attitude Supply ATD1 Backpack (32L vs. 23L), while the Osprey Nebula 32 is the lighter pack at 1kg (vs. 1.7kg). For carry-on flexibility, the Attitude Supply ATD1 Backpack fits 17% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Osprey Nebula 32; if you want to travel lighter, the Osprey Nebula 32 is the better call.