REI Co-op Flash Pack 22 vs. OpposeThis Invisible Backpack 3
Two carry-on travel backpacks, compared spec for spec.
REI Co-op Flash Pack 22
| Capacity | 22 L |
| Weight | 0.4 kg |
| Dimensions | 48×28×20 cm |
| Airline fit | 93% |
| Price | $60 |
Feature by feature
| REI Co-op Flash Pack 22 | Feature | OpposeThis Invisible Backpack 3 |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 3 | Opening | 3 |
| top | Passport | top |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| Y | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside | ||
| 15in | Laptop | 15in |
| 3 | Main Compartments | 5 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | N |
| N | Water Resistant | Y |
| Material | |
| Recycled nylon (bluesign®;-approved) | 800x600D lightweight waterproof nylon-polyester blend |
OpposeThis Invisible Backpack 3
| Capacity | 23 L |
| Weight | 0.9 kg |
| Dimensions | 49×35×19 cm |
| Airline fit | 90% |
| Price | $250 |
Key differences between the REI Co-op Flash Pack 22 and OpposeThis Invisible Backpack 3
- Hip belt: Yes on the REI Co-op Flash Pack 22; No on the OpposeThis Invisible Backpack 3.
- Main compartments: 3 on the REI Co-op Flash Pack 22; 5 on the OpposeThis Invisible Backpack 3.
- Water bottle pockets: 2, side on the REI Co-op Flash Pack 22; No on the OpposeThis Invisible Backpack 3.
- Water resistant: No on the REI Co-op Flash Pack 22; Yes on the OpposeThis Invisible Backpack 3.
Both have: passport pocket, backpack straps, sternum strap, laptop sleeve.
Which airlines take each bag as a carry-on
We checked both bags against the carry-on size limits of 189 airlines. 171 accept both. 5 accept only the REI Co-op Flash Pack 22, and 0 accept only the OpposeThis Invisible Backpack 3.
Only the REI Co-op Flash Pack 22 fits
Air Niugini, Cayman Airways, Great Lakes Airlines, Regional Express, Virgin Australia.
REI Co-op Flash Pack 22 vs. OpposeThis Invisible Backpack 3: which should you pack?
The OpposeThis Invisible Backpack 3 carries 1L more than the REI Co-op Flash Pack 22 (22L vs. 23L), while the REI Co-op Flash Pack 22 is the lighter pack at 0.4kg (vs. 0.9kg). For carry-on flexibility, the REI Co-op Flash Pack 22 fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the OpposeThis Invisible Backpack 3; if you want to travel lighter, the REI Co-op Flash Pack 22 is the better call.