---
url: "https://onebag.travel/compare/ahyvuk1jes/attitude-supply-atd2-backpack/v8w05nc01o/topo-designs-global-travel-bag-30l/"
title: "Attitude Supply ATD2 Backpack vs Topo Designs Global Travel Bag 30L"
description: "Attitude Supply ATD2 Backpack vs Topo Designs Global Travel Bag 30L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/ahyvuk1jes/attitude-supply-atd2-backpack/v8w05nc01o/topo-designs-global-travel-bag-30l/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Attitude Supply ATD2 Backpack vs. Topo Designs Global Travel Bag 30L

# Attitude Supply ATD2 Backpack vs. Topo Designs Global Travel Bag 30L

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

## [Attitude Supply ATD2 Backpack](https://onebag.travel/carryon/ahyvuk1jes/attitude-supply-atd2-backpack/)

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

![Front facing view of the Attitude Supply ATD2 Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990291/carryons/attitude-supply-atd2-backpack-ahyvuk1jes.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>18 L</td></tr><tr><td>Weight</td><td>1.3 kg</td></tr><tr><td>Dimensions</td><td>45×25×19 cm</td></tr><tr><td>Airline fit</td><td>96%</td></tr><tr><td>Price</td><td>$475</td></tr></tbody></table>

## Feature by feature

| Attitude Supply ATD2 Backpack | Feature | Topo Designs Global Travel Bag 30L |
| --- | --- | --- |
| Storage |
| 4 | Compression | N |
| 31L | Expanded Capacity | 35L |
| 1 | Opening | 1 |
| front | Passport | front |
| Y | Passthrough | Y |
| Carry |
| removable | Backpack | hideable |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 2 | Main Compartments | 3 |
| 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>Challenge Sailcloth Ecopak® EPLX600</td><td>1000D recycled nylon,</td></tr></tbody></table>

## [Topo Designs Global Travel Bag 30L](https://onebag.travel/carryon/v8w05nc01o/topo-designs-global-travel-bag-30l/)

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

![Front facing view of the Topo Designs Global Travel Bag 30L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990450/carryons/topo-designs-global-travel-bag-30l-v8w05nc01o.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>30 L</td></tr><tr><td>Weight</td><td>1.2 kg</td></tr><tr><td>Dimensions</td><td>51×32×18 cm</td></tr><tr><td>Airline fit</td><td>89%</td></tr><tr><td>Price</td><td>$200</td></tr></tbody></table>

## Key differences between the Attitude Supply ATD2 Backpack and Topo Designs Global Travel Bag 30L

-   **Compression straps:** 4 on the Attitude Supply ATD2 Backpack; No on the Topo Designs Global Travel Bag 30L.
-   **Expansion:** 31L when expanded on the Attitude Supply ATD2 Backpack; 35L when expanded on the Topo Designs Global Travel Bag 30L.
-   **Backpack straps:** Removable on the Attitude Supply ATD2 Backpack; Hideable on the Topo Designs Global Travel Bag 30L.
-   **Main compartments:** 2 on the Attitude Supply ATD2 Backpack; 3 on the Topo Designs Global Travel Bag 30L.
-   **Built-in organizer:** Yes on the Attitude Supply ATD2 Backpack; No on the Topo Designs Global Travel Bag 30L.

Both have: passport pocket, luggage passthrough, hip belt, sternum strap, laptop sleeve, 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. 169 accept both. 12 accept only the Attitude Supply ATD2 Backpack, and 0 accept only the Topo Designs Global Travel Bag 30L.

### Only the Attitude Supply ATD2 Backpack fits

Air Niugini, Air Tahiti, American Eagle, Belavia, easyJet, Etihad Airways, Great Lakes Airlines, Gulf Air, Qatar Airways, Ravn Alaska, Regional Express, Virgin Australia.

## Attitude Supply ATD2 Backpack vs. Topo Designs Global Travel Bag 30L: which should you pack?

The **Topo Designs Global Travel Bag 30L** carries 12L more than the **Attitude Supply ATD2 Backpack** (18L vs. 30L), while the **Topo Designs Global Travel Bag 30L** is the lighter pack at 1.2kg (vs. 1.3kg). For carry-on flexibility, the **Attitude Supply ATD2 Backpack** fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Topo Designs Global Travel Bag 30L; if you want to travel lighter, the Topo Designs Global Travel Bag 30L is the better call.