---
url: "https://onebag.travel/compare/9xu51kf1km/aer-travel-pack-2-small/dm0uuxdv6q/boundary-supply-prima/"
title: "Aer Travel Pack 2 Small vs Boundary Supply Prima"
description: "Aer Travel Pack 2 Small vs Boundary Supply Prima: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/9xu51kf1km/aer-travel-pack-2-small/dm0uuxdv6q/boundary-supply-prima/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Aer Travel Pack 2 Small vs. Boundary Supply Prima

# Aer Travel Pack 2 Small vs. Boundary Supply Prima

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

## [Aer Travel Pack 2 Small](https://onebag.travel/carryon/9xu51kf1km/aer-travel-pack-2-small/)

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

![Front facing view of the Aer Travel Pack 2 Small](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1620122261/carryons/Aer_Travel_Pack_2_Small_hkws6h.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>1.7 kg</td></tr><tr><td>Dimensions</td><td>48×33×19 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$229</td></tr></tbody></table>

## Feature by feature

| Aer Travel Pack 2 Small | Feature | Boundary Supply Prima |
| --- | --- | --- |
| Storage |
| 4 | Compression | 2 |
| None | Expanded Capacity | None |
| 1 | Opening | 3 |
| top, side | Passport | top |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| optional | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 16in | Laptop | 16in |
| 5 | Main Compartments | 0 |
| 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>700D Cordura</td><td>500D Kodra Nylon YKK StormGuard</td></tr></tbody></table>

## [Boundary Supply Prima](https://onebag.travel/carryon/dm0uuxdv6q/boundary-supply-prima/)

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

![Front facing view of the Boundary Supply Prima](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1600731473/carryons/boundarysupplyprima_aldknt.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>1.9 kg</td></tr><tr><td>Dimensions</td><td>53×31×18 cm</td></tr><tr><td>Airline fit</td><td>88%</td></tr><tr><td>Price</td><td>$319</td></tr></tbody></table>

## Key differences between the Aer Travel Pack 2 Small and Boundary Supply Prima

-   **Compression straps:** 4 on the Aer Travel Pack 2 Small; 2 on the Boundary Supply Prima.
-   **Opening:** Clamshell on the Aer Travel Pack 2 Small; Top flap on the Boundary Supply Prima.
-   **Passport pocket:** Top, side on the Aer Travel Pack 2 Small; Top on the Boundary Supply Prima.
-   **Hip belt:** Optional on the Aer Travel Pack 2 Small; Removable on the Boundary Supply Prima.

Both have: luggage passthrough, backpack straps, sternum strap, laptop sleeve, 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. 167 accept both. 7 accept only the Aer Travel Pack 2 Small, and 0 accept only the Boundary Supply Prima.

### Only the Aer Travel Pack 2 Small fits

Belavia, Etihad Airways, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Virgin Australia.

## Aer Travel Pack 2 Small vs. Boundary Supply Prima: which should you pack?

The **Boundary Supply Prima** carries 2L more than the **Aer Travel Pack 2 Small** (28L vs. 30L), while the **Aer Travel Pack 2 Small** is the lighter pack at 1.7kg (vs. 1.9kg). For carry-on flexibility, the **Aer Travel Pack 2 Small** fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Prima; if you want to travel lighter, the Aer Travel Pack 2 Small is the better call.