---
url: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/wnfolw37xn/ortlieb-atrack-st/"
title: "Cotopaxi Allpa 35L versus Ortlieb Atrack ST - One Bag Travel"
description: "Comparison of the Cotopaxi Allpa 35L and Ortlieb Atrack ST carry-on travel backpacks."
source: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/wnfolw37xn/ortlieb-atrack-st/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Cotopaxi Allpa 35L vs. Ortlieb Atrack ST

# Cotopaxi Allpa 35L vs. Ortlieb Atrack ST

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 | Ortlieb Atrack ST |
| --- | --- | --- |
| Storage |
| N | Compression | Y |
| None | Expanded Capacity | None |
| 1 | Opening | 4 |
| front | Passport | N |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | Y |
| Y | Sternum Strap | Y |
| Inside |
| 15in | Laptop | N |
| 3 | Main Compartments | 1 |
| Y | Organizer |  |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 2 |
| 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>PS33</td></tr></tbody></table>

## [Ortlieb Atrack ST](https://onebag.travel/carryon/wnfolw37xn/ortlieb-atrack-st/)

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

![Front facing view of the Ortlieb Atrack ST](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1630938166/carryons/Atrack_ST_kabren.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>1.41 kg</td></tr><tr><td>Dimensions</td><td>56×26×25 cm</td></tr><tr><td>Airline fit</td><td>27%</td></tr><tr><td>Price</td><td>$250</td></tr></tbody></table>

The Cotopaxi Allpa 35L and Ortlieb Atrack ST are both reliable choices when it comes to carry-on backpacks. Both are renowned for their durability and versatility due to their ideal weight and size specifications. However, each backpack does have quite different qualities that set them apart complexly. The Allpa 35L, standing at 20 inches tall, 30 inches wide, and 51 inches deep, offers a fairly comfortable fit - and it's sleek 1.5-pound figure makes for a near weightless experience. Contrastingly, the Atrack ST, slightly taller at 25 inches, provides a spacious 26-inch width and depth of 56-inches. Its lighter weight of 1.41 pounds underscores the meticulous design focus on lightweight practicality.

A quick comparison of these two backpacks would look like this:

-   Size: **Cotopaxi is 20x30x51 inches**, Ortlieb is 25x26x56 inches
-   Weight: **Cotopaxi weighs 1.5 pounds**, Ortlieb weighs 1.41 pounds
-   Capacity: **Cotopaxi has a 35 L capacity**, Ortlieb has a 25 L capacity
-   Airline Compatibility: **Cotopaxi is compatible with 80% of airlines**, Ortlieb with 38%
-   Material: **Cotopaxi is made of 1680D ballistic nylon paneling**, Ortlieb is made of PS33
-   Laptop Compatibility: **Cotopaxi has a compartment for 15-inch laptop**, Ortlieb doesn't have one.

One of the stand-out points is the airliner compatibility. The Allpa 35L, having the edge, is admissible with 80% of airlines as opposed to the Atrack ST's 38% compatibility. This statistic becomes critical when considering long-haul, intercontinental flights where airline regulations are more strictly upheld.

Looking at the materials used, the Allpa 35L is constructed with 1680D ballistic nylon paneling - a sturdy yet lightweight material highly appreciated for its excellent durability and high resistance to wear and tear. Meanwhile, the Atrack ST is built using PS33, another commendable rugged material well-suited for outdoor activities. Lastly, to the advantage of digital nomads everywhere, the Allpa 35L includes a spacious laptop compartment that fits 15-inch laptops comfortably, while the Atrack ST, unfortunately, does not offer similar accommodation.

In the words of one reviewer, "the Cotopaxi Allpa 35L Travel Pack is a great all-around bag that is smartly designed for carry-on compliance and can suit both urban and outdoorsy travelers alike." The Cotopaxi Allpa 35L, praised for its organization and comfortability, seems tailored to the easy-going yet prepared adventurer. Meanwhile, the Ortlieb Atrack ST comes highly recommended for those venturing into graver terrains. Its weatherproof properties and outdoor gear attachments are set to impress any undaunted explorer. It's a backpack that's well-developed, intuitive, and takes into account theft-deterrence design whilst providing comfort. Now, whether you're about to embark on an urban excursion or an adventurous hike, the choice is yours.