---
url: "https://onebag.travel/compare/78vav73t7n/gregory-border-25/97t3pto626/thule-aion-28l/"
title: "Gregory Border 25 vs Thule Aion 28L - One Bag Travel"
description: "Gregory Border 25 vs Thule Aion 28L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/78vav73t7n/gregory-border-25/97t3pto626/thule-aion-28l/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Gregory Border 25 vs. Thule Aion 28L

# Gregory Border 25 vs. Thule Aion 28L

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

## [Gregory Border 25](https://onebag.travel/carryon/78vav73t7n/gregory-border-25/)

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

![Front facing view of the Gregory Border 25](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990369/carryons/gregory-border-25-78vav73t7n.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>25 L</td></tr><tr><td>Weight</td><td>0.9 kg</td></tr><tr><td>Dimensions</td><td>50×33×23 cm</td></tr><tr><td>Airline fit</td><td>72%</td></tr><tr><td>Price</td><td>$140</td></tr></tbody></table>

## Feature by feature

| Gregory Border 25 | Feature | Thule Aion 28L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | 32L |
| 0 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | optional |
| Y | Sternum Strap | Y |
| Inside |
| 15in | Laptop | 16in |
| 4 | Main Compartments | 4 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>PVC-Free Coated 210D High Density 66 Nylon &amp; 100% Recycled 450D Polyester with C0 DWR: designed without PFAS</td><td>Waxed P600 polyester canvas</td></tr></tbody></table>

## [Thule Aion 28L](https://onebag.travel/carryon/97t3pto626/thule-aion-28l/)

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

![Front facing view of the Thule Aion 28L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990441/carryons/thule-aion-28l-97t3pto626.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>28 L</td></tr><tr><td>Weight</td><td>1.2 kg</td></tr><tr><td>Dimensions</td><td>47×28×23 cm</td></tr><tr><td>Airline fit</td><td>74%</td></tr><tr><td>Price</td><td>$190</td></tr></tbody></table>

## Key differences between the Gregory Border 25 and Thule Aion 28L

-   **Opening:** Other on the Gregory Border 25; Clamshell on the Thule Aion 28L.
-   **Hip belt:** No on the Gregory Border 25; Optional on the Thule Aion 28L.
-   **Laptop sleeve:** 15in on the Gregory Border 25; 16in on the Thule Aion 28L.

Both have: passport pocket, luggage passthrough, backpack straps, sternum strap, 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. 136 accept both. 0 accept only the Gregory Border 25, and 3 accept only the Thule Aion 28L.

### Only the Thule Aion 28L fits

Great Lakes Airlines, Regional Express, Virgin Australia.

## Gregory Border 25 vs. Thule Aion 28L: which should you pack?

The **Thule Aion 28L** carries 3L more than the **Gregory Border 25** (25L vs. 28L), while the **Gregory Border 25** is the lighter pack at 0.9kg (vs. 1.2kg). For carry-on flexibility, the **Thule Aion 28L** fits 74% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Thule Aion 28L; if you want to travel lighter, the Gregory Border 25 is the better call.