---
url: "https://onebag.travel/compare/cq301ksmxd/tortuga-outbreaker-backpack-45l/l7agtd2du4/topo-travel-bag-40l/"
title: "Tortuga Outbreaker Backpack 45L vs Topo Travel Bag 40L"
description: "Tortuga Outbreaker Backpack 45L vs Topo Travel Bag 40L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/cq301ksmxd/tortuga-outbreaker-backpack-45l/l7agtd2du4/topo-travel-bag-40l/"
---
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3.  Tortuga Outbreaker Backpack 45L vs. Topo Travel Bag 40L

# Tortuga Outbreaker Backpack 45L vs. Topo Travel Bag 40L

Two carry-on travel backpacks, compared spec for spec.

## [Tortuga Outbreaker Backpack 45L](https://onebag.travel/carryon/cq301ksmxd/tortuga-outbreaker-backpack-45l/)

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

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>45 L</td></tr><tr><td>Weight</td><td>2.3 kg</td></tr><tr><td>Dimensions</td><td>56×36×23 cm</td></tr><tr><td>Airline fit</td><td>45%</td></tr><tr><td>Price</td><td>$350</td></tr></tbody></table>

## Feature by feature

| Tortuga Outbreaker Backpack 45L | Feature | Topo Travel Bag 40L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| front | Passport | front |
| N | Passthrough | N |
| Carry |
| Y | Backpack | hideable |
| removable | Hip Belt | removable |
| Y | Sternum Strap | removable |
| Inside |
| 17in | Laptop | 15in |
| 4 | Main Compartments | 4 |
| Y | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>X-Pac VX21</td><td>1000D recycled nylon,</td></tr></tbody></table>

## [Topo Travel Bag 40L](https://onebag.travel/carryon/l7agtd2du4/topo-travel-bag-40l/)

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

![Front facing view of the Topo Travel Bag 40L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1617230517/carryons/Topo_Travel_Bag_-_40L_hretnv.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>40 L</td></tr><tr><td>Weight</td><td>1.7 kg</td></tr><tr><td>Dimensions</td><td>57×36×19 cm</td></tr><tr><td>Airline fit</td><td>16%</td></tr><tr><td>Price</td><td>$230</td></tr></tbody></table>

## Key differences between the Tortuga Outbreaker Backpack 45L and Topo Travel Bag 40L

-   **Backpack straps:** Yes on the Tortuga Outbreaker Backpack 45L; Hideable on the Topo Travel Bag 40L.
-   **Sternum strap:** Yes on the Tortuga Outbreaker Backpack 45L; Removable on the Topo Travel Bag 40L.
-   **Laptop sleeve:** 17in on the Tortuga Outbreaker Backpack 45L; 15in on the Topo Travel Bag 40L.
-   **Built-in organizer:** Yes on the Tortuga Outbreaker Backpack 45L; No on the Topo Travel Bag 40L.

Both have: passport pocket, hip belt, water bottle pockets, water resistant.

## Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 29 accept both. 56 accept only the Tortuga Outbreaker Backpack 45L, and 2 accept only the Topo Travel Bag 40L.

### Only the Tortuga Outbreaker Backpack 45L fits

Aegean Airlines, Air Asia, Air Astana, Air Macau, Air Nostrum, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Atlas Global, Avianca , Bahamasair, Bangkok Airways, Biman Bangladesh, British Airways, Cambodia Angkor Air, Cathay Pacific, Cebu Pacific, China Airlines, CommutAir, Copa Airlines, Delta Airlines, Dragonair, EL AL, EVA Air, Finnair, Garuda Indonesia, Hawaiian Airlines, Hong Kong Airlines, Iran Aseman Air, Jet2, jetBlue Airways, Jetstar Airways, Jetstar Asia, Kulula, Kuwait Air, Malaysia Airlines, Mango, Middle East Airlines, Monarch Airlines, Onur Air, Qantas Airways, Republic Airways, Skywest, Inc., South African Airways, Spirit Airlines, SriLankan Airlines, Thai Airways, Trans States, Travel Service Airlines, United Airlines, Uzbekistan Air, Vietnam Airlines, Virgin Atlantic, WOW Airlines.

### Only the Topo Travel Bag 40L fits

Caribbean Airlines, Croatia Air.

## Tortuga Outbreaker Backpack 45L vs. Topo Travel Bag 40L: which should you pack?

The **Tortuga Outbreaker Backpack 45L** carries 5L more than the **Topo Travel Bag 40L** (45L vs. 40L), while the **Topo Travel Bag 40L** is the lighter pack at 1.7kg (vs. 2.3kg). For carry-on flexibility, the **Tortuga Outbreaker Backpack 45L** fits 45% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Tortuga Outbreaker Backpack 45L; if you want to travel lighter, the Topo Travel Bag 40L is the better call.