---
url: "https://onebag.travel/compare/cq301ksmxd/tortuga-outbreaker-backpack-45l/sggqv7tnet/mountainsmith-divide/"
title: "Tortuga Outbreaker Backpack 45L vs Mountainsmith Divide"
description: "Tortuga Outbreaker Backpack 45L vs Mountainsmith Divide: 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/sggqv7tnet/mountainsmith-divide/"
---
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3.  Tortuga Outbreaker Backpack 45L vs. Mountainsmith Divide

# Tortuga Outbreaker Backpack 45L vs. Mountainsmith Divide

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 | Mountainsmith Divide |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 4 |
| front | Passport | front |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| Y | Sternum Strap | N |
| Inside |
| 17in | Laptop | 15in |
| 4 | Main Compartments | 4 |
| Y | Organizer | Y |
| 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>TC 20s 2x2 Waxed Canvas PU 210d Recycled Nylon SD Oxford PU</td></tr></tbody></table>

## [Mountainsmith Divide](https://onebag.travel/carryon/sggqv7tnet/mountainsmith-divide/)

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

![Front facing view of the Mountainsmith Divide](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601223796/carryons/mountainsmithdivide_brepvk.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>16 L</td></tr><tr><td>Weight</td><td>0.7 kg</td></tr><tr><td>Dimensions</td><td>46×28×14 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$90</td></tr></tbody></table>

## Key differences between the Tortuga Outbreaker Backpack 45L and Mountainsmith Divide

-   **Opening:** Clamshell on the Tortuga Outbreaker Backpack 45L; Top zip on the Mountainsmith Divide.
-   **Sternum strap:** Yes on the Tortuga Outbreaker Backpack 45L; No on the Mountainsmith Divide.
-   **Laptop sleeve:** 17in on the Tortuga Outbreaker Backpack 45L; 15in on the Mountainsmith Divide.

Both have: passport pocket, backpack straps, hip belt, built-in organizer, 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. 85 accept both. 0 accept only the Tortuga Outbreaker Backpack 45L, and 94 accept only the Mountainsmith Divide.

### Only the Mountainsmith Divide fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Niugini, Air Serbia, Air Seychelles, All Nipon Airways, American Eagle, ANA, Asiana Airlines, ATA Airlines, Austrian, Azerbaijan Airlines, Belavia, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, Caribbean Airlines, Cayman Airways, China Eastern, Croatia Air, Czech Airlines, easyJet, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, Fiji Airways, Flair Air, flybe, Gol Linhas Aereas, Great Lakes Airlines, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Oman Air, Pakistan International, Peach, Porter Airlines, Qatar Airways, Ravn Alaska, Regional Express, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Turkish Airlines, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, WestJet, Xiamen.

## Tortuga Outbreaker Backpack 45L vs. Mountainsmith Divide: which should you pack?

The **Tortuga Outbreaker Backpack 45L** carries 29L more than the **Mountainsmith Divide** (45L vs. 16L), while the **Mountainsmith Divide** is the lighter pack at 0.7kg (vs. 2.3kg). For carry-on flexibility, the **Mountainsmith Divide** fits 95% 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 Mountainsmith Divide is the better call.