---
url: "https://onebag.travel/compare/dqwwr410qw/opposethis-ark-2020/pf7vbutynt/cotopaxi-cusco-backpack-26l/"
title: "OPPOSETHIS Ark - 2020 vs Cotopaxi Cusco Backpack 26L"
description: "OPPOSETHIS Ark - 2020 vs Cotopaxi Cusco Backpack 26L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/dqwwr410qw/opposethis-ark-2020/pf7vbutynt/cotopaxi-cusco-backpack-26l/"
---
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3.  OPPOSETHIS Ark - 2020 vs. Cotopaxi Cusco Backpack 26L

# OPPOSETHIS Ark - 2020 vs. Cotopaxi Cusco Backpack 26L

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

## [OPPOSETHIS Ark - 2020](https://onebag.travel/carryon/dqwwr410qw/opposethis-ark-2020/)

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

![Front facing view of the OPPOSETHIS Ark - 2020](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1630890827/carryons/OPPOSETHIS_Ark-2020_v6uwzg.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>25 L</td></tr><tr><td>Weight</td><td>0.95 kg</td></tr><tr><td>Dimensions</td><td>49×30×17 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$244</td></tr></tbody></table>

## Feature by feature

| OPPOSETHIS Ark - 2020 | Feature | Cotopaxi Cusco Backpack 26L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| N | Backpack | Y |
| N | Hip Belt | N |
| Y | Sternum Strap | Y |
| Inside |
| 16in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 2 |
| 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>100% repurposed 600D polyester</td></tr></tbody></table>

## [Cotopaxi Cusco Backpack 26L](https://onebag.travel/carryon/pf7vbutynt/cotopaxi-cusco-backpack-26l/)

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

![Front facing view of the Cotopaxi Cusco Backpack 26L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1621511060/carryons/Cotopaxi_Cusco_Backpack_26L_hu2bah.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>26 L</td></tr><tr><td>Weight</td><td>0.7 kg</td></tr><tr><td>Dimensions</td><td>53×33×23 cm</td></tr><tr><td>Airline fit</td><td>70%</td></tr><tr><td>Price</td><td>$110</td></tr></tbody></table>

## Key differences between the OPPOSETHIS Ark - 2020 and Cotopaxi Cusco Backpack 26L

-   **Opening:** Clamshell on the OPPOSETHIS Ark - 2020; Top zip on the Cotopaxi Cusco Backpack 26L.
-   **Backpack straps:** No on the OPPOSETHIS Ark - 2020; Yes on the Cotopaxi Cusco Backpack 26L.
-   **Laptop sleeve:** 16in on the OPPOSETHIS Ark - 2020; 15in on the Cotopaxi Cusco Backpack 26L.
-   **Water bottle pockets:** 1 on the OPPOSETHIS Ark - 2020; 2 on the Cotopaxi Cusco Backpack 26L.

Both have: sternum strap, built-in organizer, water resistant.

## Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 132 accept both. 41 accept only the OPPOSETHIS Ark - 2020, and 0 accept only the Cotopaxi Cusco Backpack 26L.

### Only the OPPOSETHIS Ark - 2020 fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, Etihad Airways, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Oman Air, Pakistan International, Qatar Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.

## OPPOSETHIS Ark - 2020 vs. Cotopaxi Cusco Backpack 26L: which should you pack?

The **Cotopaxi Cusco Backpack 26L** carries 1L more than the **OPPOSETHIS Ark - 2020** (25L vs. 26L), while the **Cotopaxi Cusco Backpack 26L** is the lighter pack at 0.7kg (vs. 0.95kg). For carry-on flexibility, the **OPPOSETHIS Ark - 2020** fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Cotopaxi Cusco Backpack 26L; if you want to travel lighter, the Cotopaxi Cusco Backpack 26L is the better call.