---
url: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/cP4fciNY/tom-bihn-synapse-19/"
title: "Cotopaxi Allpa 35L versus Tom Bihn Synapse 19 - One Bag Travel"
description: "Comparison of the Cotopaxi Allpa 35L and Tom Bihn Synapse 19 carry-on travel backpacks."
source: "https://onebag.travel/compare/mcN0aY6G/cotopaxi-allpa-35l/cP4fciNY/tom-bihn-synapse-19/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Cotopaxi Allpa 35L vs. Tom Bihn Synapse 19

# Cotopaxi Allpa 35L vs. Tom Bihn Synapse 19

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 Synapse 19 |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 0 |
| front | Passport | front |
| 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, front |
| 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>200 denier Halcyon/nylon ripstop fabric lining 400 denier nylon lower back</td></tr></tbody></table>

## [Tom Bihn Synapse 19](https://onebag.travel/carryon/cP4fciNY/tom-bihn-synapse-19/)

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

![Front facing view of the Tom Bihn Synapse 19](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/carryons/uwtawghajoe4uwr4xhoy)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>19 L</td></tr><tr><td>Weight</td><td>0.7 kg</td></tr><tr><td>Dimensions</td><td>41×29×20 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$240</td></tr></tbody></table>

The Cotopaxi Allpa 35L and the Tom Bihn Synapse 19 are both strong contenders for a reliable carry on backpack. The Allpa is a robust beast of a bag, boasting a hefty 35 liter storage capacity and a sturdy construction of 1680D ballistic nylon paneling. Its dimensions qualify it to meet the carry-on standards of 80% of airlines around the globe. Additionally, in terms of organization and storage, it has compartments wisely designed for a nifty order, including a laptop slot that can comfortably hold a 15 inch machine.

The Tom Bihn Synapse 19, on the other hand, is lightweight and the picture of minimal beauty. Weighing in at just 0.7 pounds and crafted with a durable 200 denier Halcyon/nylon ripstop fabric, it promises longevity and strength. The Synapse's size is designed to comply with the regulations of 99% of airlines, making it a convenient travel companion. As with the Allpa, this pack also carries a 15-inch laptop compartment and offers a smart array of storage compartments.

Here are some contrasting points of the two:

-   Cotopaxi Allpa 35L: 35 liters, 1.5 pounds, 80% airline compatibility, made of 1680D ballistic nylon, 15 inch laptop compartment
-   Tom Bihn Synapse 19: 19 liters, 0.7 pounds, 99% airline compatibility, made of nylon ripstop fabric, 15 inch laptop compartment

Reviewers have lauded the Allpa 35L for its simple and comfortable design, hailing it as the ideal bag for budding world travelers and outdoor enthusiasts. Its intuitive internally organization system has been particularly praised as the best in the business. On the other hand, the Synapse 19 has been commended for its durability and American craftsmanship. It's been called a great bag for everyday carry and performance, with its customization options proving a hit among users.

In conclusion, the choice between the Cotopaxi Allpa 35L and the Tom Bihn Synapse 19 largely depends on your travel needs and preferences. If sturdiness and large storage space are your priorities, the Allpa would suit you best. If you are after lightweight construction, minimalist design and higher airline compatibility, the Synapse would be your ideal pick. Just remember to carry along your passion for adventure and verve for new experiences, and either of these packs would make a faithful companion.