---
url: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/cfo1f254gp/rei-co-op-trail-pack-25/"
title: "Cotopaxi Allpa 35L versus REI Co-op Trail Pack 25 - One Bag Travel"
description: "Comparison of the Cotopaxi Allpa 35L and REI Co-op Trail Pack 25 carry-on travel backpacks."
source: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/cfo1f254gp/rei-co-op-trail-pack-25/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Cotopaxi Allpa 35L vs. REI Co-op Trail Pack 25

# Cotopaxi Allpa 35L vs. REI Co-op Trail Pack 25

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 | REI Co-op Trail Pack 25 |
| --- | --- | --- |
| Storage |
| N | Compression | 2 |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| front | Passport | top |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | removable |
| Y | Sternum Strap | Y |
| Inside |
| 15in | Laptop | N |
| 3 | Main Compartments | 3 |
| Y | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | Y |
| 1, side | Water Bottle Holder | 2, side |
| 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>210-denier ripstop nylon</td></tr></tbody></table>

## [REI Co-op Trail Pack 25](https://onebag.travel/carryon/cfo1f254gp/rei-co-op-trail-pack-25/)

by [REI Co-op](https://onebag.travel/carryons/?brands=REI Co-op)

![Front facing view of the REI Co-op Trail Pack 25](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601602563/carryons/reicoop_o83w5i.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>0.8 kg</td></tr><tr><td>Dimensions</td><td>46×33×20 cm</td></tr><tr><td>Airline fit</td><td>94%</td></tr><tr><td>Price</td><td>$100</td></tr></tbody></table>

The Cotopaxi Allpa 35L and the REI Co-op Trail Pack 25 both offer an impressive assortment of features for the modern backpacker, but there are notable differences. Right out of the gate, the Cotopaxi Allpa 35L demands attention with its generous size, boasting a 35 liter capacity compared to the Trail Pack's 25 liters. The Allpa 35L's dimensions, 20 x 30 x 51 inches, offer a compelling, spacious profile tailored to the traveler who prefers keeping all essentials within reach. On the flip side, the REI Co-op Trail Pack 25, although smaller at 50 x 34 x 20 inches, weighs a mere 0.9 pounds, offering simplicity and lightweight appeal without sacrificing durability with its ripstop nylon makeup.

The Allpa 35L, made of robust 1680D ballistic nylon paneling, showcases a feature that the Trail Pack lacks—a laptop compartment that can fit a 15” laptop. Here lies an advantage for those who need to integrate their digital life into their travel gear. However, if compatibility with airlines is your primary concern, the Trail Pack wins out, being compatible with 98% of airlines compared to the Allpa’s compatibility with 80% of them.

Here are the comparison bullet points:

-   The Cotopaxi Allpa 35L has 35 liters capacity; REI Co-op Trail Pack 25 has 25 liters.
-   The Cotopaxi Allpa 35L weighs 1.5 pounds; The REI Co-op Trail Pack 25 weighs 0.9 pounds.
-   The Cotopaxi Allpa 35L is made of 1680D ballistic nylon; The REI Co-op Trail Pack 25 is made of Ripstop nylon.
-   The Cotopaxi Allpa 35L has a laptop compartment; The REI co-op Trail Pack 25 does not.
-   The Cotopaxi Allpa 35L is compatible with 80% of airlines; The REI co-op Trail Pack 25 is compatible with 98% of airlines.

To purchase or not to purchase boils down to individual preferences and priorities. Reviewers can't stop praising the Cotopaxi Allpa 35L for its internal organization, praising it for its durability, intuitive layout, and simple, comfortable design. Its additional features make it the optimal choice—rain cover, comfortable shoulder straps, hip belt, adjustable sternum straps, collapsible mesh laundry bag, nylon shoe bag, and a mesh water bottle sleeve. It's a bag that bears weight without sacrificing comfort, meant to go the distance—a worthy companion for your next adventure. The REI Co-op Trail Pack 25, undoubtedly, caters to a different kind of traveler—one who prefers a lighter carry, looking for high compatibility and straightforward utilitarian design. The backpack world has ample space for these two contenders. It's now up to you, the traveler, to determine your luggage soulmate.