---
url: "https://onebag.travel/compare/dm0uuxdv6q/boundary-supply-prima/mo8pxobpf9/aer-city-pack/"
title: "Boundary Supply Prima vs Aer City Pack - One Bag Travel"
description: "Boundary Supply Prima vs Aer City Pack: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/dm0uuxdv6q/boundary-supply-prima/mo8pxobpf9/aer-city-pack/"
---
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3.  Boundary Supply Prima vs. Aer City Pack

# Boundary Supply Prima vs. Aer City Pack

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

## [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>

## Feature by feature

| Boundary Supply Prima | Feature | Aer City Pack |
| --- | --- | --- |
| Storage |
| 2 | Compression | N |
| None | Expanded Capacity | None |
| 3 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside |
| 16in | Laptop | 16in |
| 0 | 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>500D Kodra Nylon YKK StormGuard</td><td>1680D Cordura® ballistic nylon exterior</td></tr></tbody></table>

## [Aer City Pack](https://onebag.travel/carryon/mo8pxobpf9/aer-city-pack/)

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

![Front facing view of the Aer City Pack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990318/carryons/aer-city-pack-mo8pxobpf9.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>14 L</td></tr><tr><td>Weight</td><td>1.1 kg</td></tr><tr><td>Dimensions</td><td>46×30×13 cm</td></tr><tr><td>Airline fit</td><td>94%</td></tr><tr><td>Price</td><td>$150</td></tr></tbody></table>

## Key differences between the Boundary Supply Prima and Aer City Pack

-   **Compression straps:** 2 on the Boundary Supply Prima; No on the Aer City Pack.
-   **Opening:** Top flap on the Boundary Supply Prima; Clamshell on the Aer City Pack.
-   **Hip belt:** Removable on the Boundary Supply Prima; No on the Aer City Pack.

Both have: passport pocket, 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. 0 accept only the Boundary Supply Prima, and 11 accept only the Aer City Pack.

### Only the Aer City Pack fits

Air Niugini, American Eagle, Belavia, easyJet, Etihad Airways, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Jordanian, Virgin Australia.

## Boundary Supply Prima vs. Aer City Pack: which should you pack?

The **Boundary Supply Prima** carries 16L more than the **Aer City Pack** (30L vs. 14L), while the **Aer City Pack** is the lighter pack at 1.1kg (vs. 1.9kg). For carry-on flexibility, the **Aer City Pack** fits 94% 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 City Pack is the better call.