---
url: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/lgggqva3tj/aer-duffel-pack-2/"
title: "Cotopaxi Allpa 35L versus Aer Duffel Pack 2 - One Bag Travel"
description: "Comparison of the Cotopaxi Allpa 35L and Aer Duffel Pack 2 carry-on travel backpacks."
source: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/lgggqva3tj/aer-duffel-pack-2/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Cotopaxi Allpa 35L vs. Aer Duffel Pack 2

# Cotopaxi Allpa 35L vs. Aer Duffel Pack 2

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 | Aer Duffel Pack 2 |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| front | Passport | N |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | N |
| Y | Sternum Strap | Y |
| Inside |
| 15in | Laptop | 15in |
| 3 | Main Compartments | 3 |
| Y | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1 |
| 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>900D eco-dyed polyester exterior</td></tr></tbody></table>

## [Aer Duffel Pack 2](https://onebag.travel/carryon/lgggqva3tj/aer-duffel-pack-2/)

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

![Front facing view of the Aer Duffel Pack 2](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1618225092/carryons/Aer_Duffel_Pack_2_wphfg9.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>24.6 L</td></tr><tr><td>Weight</td><td>1.1 kg</td></tr><tr><td>Dimensions</td><td>55×30×20 cm</td></tr><tr><td>Airline fit</td><td>86%</td></tr><tr><td>Price</td><td>$136</td></tr></tbody></table>

The Cotopaxi Allpa 35L and the Aer Duffel Pack 2 are two carry-on backpacks designed to cater for different travel goals. Made by American outdoor company Cotopaxi, the Allpa 35L is a durable, feature-rich carry-on made to withstand rough handling, capable of carrying larger loads at 35 liters capacity. Constructed from 1680D ballistic nylon paneling, this light 1.5 pound backpack, compatible with 80% of airlines, is designed to appeal to both outdoor and urban adventures. It comes with a laptop compartment that fits a 15-inch laptop. Reviewers have praised its organization, simplicity, comfort, and durability.

On the other hand, the Aer Duffel Pack 2 positions itself as a cross between athletic and corporate functionality. With its slightly lighter weight of 1.1 pounds and a bit smaller capacity of 24.6 liters, it is ideal for the active commuter. Its compatibility with 78% of airlines and construction from 900D eco-dyed polyester exterior makes it less rugged yet more eco-friendly than its Cotopaxi counterpart. The bag is similar in size and also carries a 15-inch laptop compartment. Reviewers commend it as an excellent active outdoor backpack with ample space.

-   **Size and Weight**: Both bags are 20 inches tall and 30 inches wide. However, the Cotopaxi Allpa 35L (51 inches deep) is slightly more compact than the Aer Duffel Pack 2 (55 inches deep), and is also a bit heavier.
-   **Capacity**: The Cotopaxi Allpa 35L offers a capacity of 35 liters, a decent size bigger than the Aer Duffel Pack 2, which offers a 24.6-litre carry capacity.
-   **Material**: The Cotopaxi Allpa 35L, with its 1680D ballistic nylon paneling, is considerably more robust than the 900D eco-dyed polyester exterior of the Aer Duffel Pack 2.
-   **Comfort**: Both bags come with padded shoulder straps and offer a comfortable fit for users.

Both bags are favored for their comfort, durability, and functionality. The Cotopaxi Allpa 35L is highly valued for its attention to detail, including the inclusion of a rain cover, collapsible mesh laundry bag, nylon shoe bag, and a mesh water bottle sleeve. The Aer Duffel Pack 2 also scores points for its great ventilation, durable feel, and especially its elevated laptop compartment with excellent padding. The final decision between the two will likely be down to the specific needs of the user. Both bags have strong followings and are well-regarded in their respective categories, making it a tough choice. However, the greater capacity and rugged construction of the Cotopaxi Allpa 35L will likely appeal more to outdoor enthusiasts, while the eco-friendly construction and slightly lighter weight of the Aer Duffel Pack 2 may be more appreciated by commuters and urban travellers.