---
url: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/aqw7uasy9t/opposethis-invisible-backpack-3/"
title: "Cotopaxi Allpa 35L versus OpposeThis Invisible Backpack 3 - One Bag Travel"
description: "Comparison of the Cotopaxi Allpa 35L and OpposeThis Invisible Backpack 3 carry-on travel backpacks."
source: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/aqw7uasy9t/opposethis-invisible-backpack-3/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Cotopaxi Allpa 35L vs. OpposeThis Invisible Backpack 3

# Cotopaxi Allpa 35L vs. OpposeThis Invisible Backpack 3

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

## [Cotopaxi Allpa 35L](https://onebag.travel/carryon/mcN0aY6G/cotopaxi-allpa-35l/)

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

![Front facing view of the Cotopaxi Allpa 35L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/carryons/an7zqlk8sro7sdinpykn)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>35 L</td></tr><tr><td>Weight</td><td>1.3 kg</td></tr><tr><td>Dimensions</td><td>56×30×25 cm</td></tr><tr><td>Airline fit</td><td>26%</td></tr><tr><td>Price</td><td>$225</td></tr></tbody></table>

## Feature by feature

| Cotopaxi Allpa 35L | Feature | OpposeThis Invisible Backpack 3 |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 3 |
| front | Passport | top |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | N |
| Y | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 3 | Main Compartments | 5 |
| Y | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>100% recycled 840D TPU-coated nylon</td><td>800x600D lightweight waterproof nylon-polyester blend</td></tr></tbody></table>

## [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>

The Cotopaxi Allpa 35L and the OpposeThis Invisible Backpack 3 are both top-of-the-line options for the savvy traveler, but each shines in a unique way when viewed side-by-side. The Allpa 35L is the embodiment of Cotopaxi's robust reputation, boasting 1680D ballistic nylon paneling and innovative design. It's lighter than your average bear at 1.5 pounds but has a generous capacity of 35 liters, making it a formidable carry-on for wanderers of every kind. Its strongest feature, according to reviewers, is its intelligently designed internal organization.

Contrarily, the OpposeThis Invisible Backpack 3 is known for its minimalistic design, constructed using a lightweight waterproof nylon-polyester blend. Weighing barely shy of a pound, it's compatible with almost all airlines and has a deceptively spacious 23-liter capacity despite its slim silhouette. With dedicated compartments for items such as shoes or water bottles, the Invisible Backpack 3 has drawn praise for its practical yet understated design.

The differences summarized are:

-   The Cotopaxi Allpa 35L is a little heavier at 1.5 pounds, while the OpposeThis Invisible Backpack 3 is slightly lighter at 0.9 pounds.
-   The Allpa 35L has a larger capacity at 35 liters, compared to the Invisible Backpack 3's 23 liters.
-   Airline compatibility is a major advantage for the Invisible Backpack 3, fitting the rules of 98% of airlines, while the Allpa 35L manages compatibility with 80%.
-   The Allpa has a 1680D ballistic nylon panel construction, contrasting with Invisible Backpack’s 800x600D waterproof nylon-polyester blend.
-   Both have 15-inch laptop compartments, though the Allpa 35L features add-on accessories such as a collapsible laundry bag, shoe bag, and water bottle sleeve.

For individuals seeking a comfortable and robust backpack capable of carrying a full load and easily accommodating everything needed for a journey, the Cotopaxi Allpa 35L is a clear winner. Not only is the material durable, but the extra items included genuinely provide a thoughtful, complete package for any traveler. By contrast, if you're on the lookout for something light, low-profile, and versatile that gracefully blends into various environments, look no further than the OpposeThis Invisible Backpack 3. Providing ample organized storage in a weatherproof package, it's a minimalist's dream come true. Despite their differences, these backpacks are both excellent buys and should be considered depending on your personal travel style and requirements.