---
url: "https://onebag.travel/compare/m519mfyqi6/red-oxx-sky-train-convertible-backpack/qpmv5v2ap8/red-oxx-air-boss/"
title: "Red Oxx Sky Train Convertible Backpack vs Red Oxx Air Boss"
description: "Red Oxx Sky Train Convertible Backpack vs Red Oxx Air Boss: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/m519mfyqi6/red-oxx-sky-train-convertible-backpack/qpmv5v2ap8/red-oxx-air-boss/"
---
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3.  Red Oxx Sky Train Convertible Backpack vs. Red Oxx Air Boss

# Red Oxx Sky Train Convertible Backpack vs. Red Oxx Air Boss

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

## [Red Oxx Sky Train Convertible Backpack](https://onebag.travel/carryon/m519mfyqi6/red-oxx-sky-train-convertible-backpack/)

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

![Front facing view of the Red Oxx Sky Train Convertible Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990548/carryons/red-oxx-sky-train-convertible-backpack-m519mfyqi6.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>38 L</td></tr><tr><td>Weight</td><td>1.8 kg</td></tr><tr><td>Dimensions</td><td>51×33×23 cm</td></tr><tr><td>Airline fit</td><td>71%</td></tr><tr><td>Price</td><td>$400</td></tr></tbody></table>

## Feature by feature

| Red Oxx Sky Train Convertible Backpack | Feature | Red Oxx Air Boss |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| side | Passport | side |
| N | Passthrough | N |
| Carry |
| hideable | Backpack | N |
| N | Hip Belt | N |
| Y | Sternum Strap | N |
| Inside |
| 15in | Laptop | 15in |
| 4 | Main Compartments | 6 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>1000 weight urethane coated, Dupont certified CORDURA® Brand Nylon</td><td>1000 weight urethane coated, Dupont certified CORDURA® Brand Nylon</td></tr></tbody></table>

## [Red Oxx Air Boss](https://onebag.travel/carryon/qpmv5v2ap8/red-oxx-air-boss/)

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

![Front facing view of the Red Oxx Air Boss](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990547/carryons/red-oxx-air-boss-qpmv5v2ap8.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>1.8 kg</td></tr><tr><td>Dimensions</td><td>56×36×20 cm</td></tr><tr><td>Airline fit</td><td>46%</td></tr><tr><td>Price</td><td>$385</td></tr></tbody></table>

## Key differences between the Red Oxx Sky Train Convertible Backpack and Red Oxx Air Boss

-   **Backpack straps:** Hideable on the Red Oxx Sky Train Convertible Backpack; No on the Red Oxx Air Boss.
-   **Sternum strap:** Yes on the Red Oxx Sky Train Convertible Backpack; No on the Red Oxx Air Boss.
-   **Main compartments:** 4 on the Red Oxx Sky Train Convertible Backpack; 6 on the Red Oxx Air Boss.

Both have: passport pocket, laptop sleeve, built-in organizer, water resistant.

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

We checked both bags against the carry-on size limits of 189 airlines. 87 accept both. 47 accept only the Red Oxx Sky Train Convertible Backpack, and 0 accept only the Red Oxx Air Boss.

### Only the Red Oxx Sky Train Convertible Backpack fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Canada, Air Caraibes, Air France, Air India, Air Mauritius, All Nipon Airways, ANA, Austrian, Azerbaijan Airlines, Boliviana de Aviacion, Brussels Airlines, Cayman Airways, Czech Airlines, Ethiopian Airlines, Eurowings, Fiji Airways, Flair Air, Gol Linhas Aereas, Iberia, Indigo, Interjet, Iran Air, Japan Airlines, Jet Airways, Kenya Airways, KLM, LATAM , LOT Polish, Lufthansa, Mahan Air, Mesa Airlines, Norwegian, Oman Air, Peach, Porter Airlines, Royal Jordanian, SAS Scandinavian, Scoot, Sky Airlines, Swiss Int'l Air Lines, Tiger Airways, Turkish Airlines, WestJet.

## Red Oxx Sky Train Convertible Backpack vs. Red Oxx Air Boss: which should you pack?

The **Red Oxx Air Boss** carries 2L more than the **Red Oxx Sky Train Convertible Backpack** (38L vs. 40L), while the **Red Oxx Sky Train Convertible Backpack** is the lighter pack at 1.8kg (vs. 1.8kg). For carry-on flexibility, the **Red Oxx Sky Train Convertible Backpack** fits 71% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Red Oxx Air Boss; if you want to travel lighter, the Red Oxx Sky Train Convertible Backpack is the better call.