---
url: "https://onebag.travel/compare/aqw7uasy9t/opposethis-invisible-backpack-3/odexfmh1ix/cotopaxi-nazca-24l/"
title: "OpposeThis Invisible Backpack 3 vs Cotopaxi Nazca 24L"
description: "OpposeThis Invisible Backpack 3 vs Cotopaxi Nazca 24L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/aqw7uasy9t/opposethis-invisible-backpack-3/odexfmh1ix/cotopaxi-nazca-24l/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  OpposeThis Invisible Backpack 3 vs. Cotopaxi Nazca 24L

# OpposeThis Invisible Backpack 3 vs. Cotopaxi Nazca 24L

Two carry-on travel backpacks, compared spec for spec.

## [OpposeThis Invisible Backpack 3](https://onebag.travel/carryon/aqw7uasy9t/opposethis-invisible-backpack-3/)

by [OPPOSETHIS](https://onebag.travel/carryons/?brands=OPPOSETHIS)

![Front facing view of the OpposeThis Invisible Backpack 3](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601587752/carryons/Th2_2048x2048_llg2gz.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>23 L</td></tr><tr><td>Weight</td><td>0.9 kg</td></tr><tr><td>Dimensions</td><td>49×35×19 cm</td></tr><tr><td>Airline fit</td><td>90%</td></tr><tr><td>Price</td><td>$250</td></tr></tbody></table>

## 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 |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>800x600D lightweight waterproof nylon-polyester blend</td><td>630D nylon/cotton canvas</td></tr></tbody></table>

## [Cotopaxi Nazca 24L](https://onebag.travel/carryon/odexfmh1ix/cotopaxi-nazca-24l/)

by [Cotopaxi](https://onebag.travel/carryons/?brands=Cotopaxi)

![Front facing view of the Cotopaxi Nazca 24L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1619826301/carryons/Cotopaxi_Nazca_24L_wfx0x4.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>24 L</td></tr><tr><td>Weight</td><td>1.33 kg</td></tr><tr><td>Dimensions</td><td>50×27×14 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$80</td></tr></tbody></table>

## 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.