OpposeThis Invisible Backpack 3 vs. Cotopaxi Nazca 24L
Two carry-on travel backpacks, compared spec for spec.
OpposeThis Invisible Backpack 3
| Capacity | 23 L |
| Weight | 0.9 kg |
| Dimensions | 49×35×19 cm |
| Airline fit | 90% |
| Price | $250 |
Feature by feature
| OpposeThis Invisible Backpack 3 | Feature | Cotopaxi Nazca 24L |
|---|---|---|
| Storage | ||
| N | Compression | N |
| None | Expanded Capacity | None |
| 3 | Opening | 1 |
| top | Passport | N |
| N | Passthrough | N |
| Carry | ||
| Y | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | Y |
| Inside | ||
| 15in | Laptop | 15in |
| 5 | Main Compartments | 1 |
| N | Organizer | N |
| Outside | ||
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | Y |
| Material | |
| 800x600D lightweight waterproof nylon-polyester blend | 630D nylon/cotton canvas |
Cotopaxi Nazca 24L
| Capacity | 24 L |
| Weight | 1.33 kg |
| Dimensions | 50×27×14 cm |
| Airline fit | 92% |
| Price | $80 |
Key differences between the OpposeThis Invisible Backpack 3 and Cotopaxi Nazca 24L
- Opening: Top flap on the OpposeThis Invisible Backpack 3; Clamshell on the Cotopaxi Nazca 24L.
- Passport pocket: Top on the OpposeThis Invisible Backpack 3; No on the Cotopaxi Nazca 24L.
- Sternum strap: Removable on the OpposeThis Invisible Backpack 3; Yes on the Cotopaxi Nazca 24L.
- Main compartments: 5 on the OpposeThis Invisible Backpack 3; 1 on the Cotopaxi Nazca 24L.
Both have: backpack straps, laptop sleeve, water resistant.
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. 0 accept only the OpposeThis Invisible Backpack 3, and 3 accept only the Cotopaxi Nazca 24L.
Only the Cotopaxi Nazca 24L fits
Air Niugini, Cayman Airways, Great Lakes Airlines.
OpposeThis Invisible Backpack 3 vs. Cotopaxi Nazca 24L: which should you pack?
The Cotopaxi Nazca 24L carries 1L more than the OpposeThis Invisible Backpack 3 (23L vs. 24L), while the OpposeThis Invisible Backpack 3 is the lighter pack at 0.9kg (vs. 1.33kg). For carry-on flexibility, the Cotopaxi Nazca 24L fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cotopaxi Nazca 24L; if you want to travel lighter, the OpposeThis Invisible Backpack 3 is the better call.