---
url: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/i3dfh43ew9/tom-bihn-brain-bag/"
title: "Cotopaxi Allpa 35L versus Tom Bihn Brain Bag - One Bag Travel"
description: "Comparison of the Cotopaxi Allpa 35L and Tom Bihn Brain Bag carry-on travel backpacks."
source: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/i3dfh43ew9/tom-bihn-brain-bag/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Cotopaxi Allpa 35L vs. Tom Bihn Brain Bag

# Cotopaxi Allpa 35L vs. Tom Bihn Brain Bag

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 | Tom Bihn Brain Bag |
| --- | --- | --- |
| Storage |
| N | Compression | 4 |
| None | Expanded Capacity | None |
| 1 | Opening | 4 |
| front | Passport | top |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| hideable | Hip Belt | removable |
| Y | Sternum Strap | removable |
| Inside |
| 15in | Laptop | N |
| 3 | Main Compartments | 6 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, 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>525 Ballistic Nylon</td></tr></tbody></table>

## [Tom Bihn Brain Bag](https://onebag.travel/carryon/i3dfh43ew9/tom-bihn-brain-bag/)

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

![Front facing view of the Tom Bihn Brain Bag](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601123264/carryons/tombrainbag_ts952i.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>36 L</td></tr><tr><td>Weight</td><td>1.3 kg</td></tr><tr><td>Dimensions</td><td>46×36×23 cm</td></tr><tr><td>Airline fit</td><td>66%</td></tr><tr><td>Price</td><td>$240</td></tr></tbody></table>

In the traveling circles, backpacks are more than just bags; they are a vital part of the journey. Two of the best packs right now include the Cotopaxi Allpa 35L by Cotopaxi and the Tom Bihn Brain Bag by Tom Bihn. For one, the Cotopaxi Allpa 35L, being 20 inches tall, 30 inches wide, and 51 inches deep, offers amble stowing area. This bag weighs 1.5 pounds and has a carrying capacity of 35 liters, which makes it perfect for light traveling. You will not have to stress about airline compatibility, as 80% of airlines ISO-certified for carry-on allowances approve of it. Expect convenience, thanks to 1680D ballistic nylon paneling used in making the Allpa, which ensures durability and a laptop compartment that can fit a 15-inch laptop.

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###### **Comparison between Cotopaxi Allpa 35L and Tom Bihn Brain Bag**

-   Cotopaxi Allpa 35L: Dimensions 20 x 30 x 51 inches, Weight 1.5 pounds, Capacity 35 liters, Compatibility with 80% of airlines, Material 1680D ballistic nylon
-   Tom Bihn Brain Bag: Dimensions 46 x 36 x 24 inches, Weight 1.3 pounds, Capacity 36 liters, Compatibility with 92% of airlines, Material bluesign® certified 525 denier 2x2 Ballistic nylon exterior lined with bluesign® certified 210 denier 2x2 Ballistic nylon

---

On the other side, with the Brain Bag standing 46 inches tall, 36 inches wide, and 24 inches deep, the Tom Bihn creation is a stowage monster. The bag weighs 1.3 pounds and offers a carrying volume of an impressive 36 liters, while complying with 92% of airlines ISO for carry-on allowances. The Brain Bag is manufactured using bluesign certified 525 denier 2x2 Ballistic nylon exterior lined with the same certified 210 denier 2x2 Ballistic nylon which gives it tough resilience against the blowing winds of travel.

Reviewers affirm the robustness and efficiency of these backpacks. For instance, reviewers highlight the strength and durability of the Allpa 35L, the "feels like a tank when in use", and its intuitiveness graced with helpful internal organization, touting it to be the best configuration they have used so far. In the same vein, they laud the Brain Bag for its remarkable functionality and the truly comfortable harness system. Evidently, both the Cotopaxi Allpa 35L and the Tom Bihn Brain Bag are worthwhile companions in your traveling endeavors. Therefore, which of these becomes your favorite pick solely depends on your specific needs and preferences.