---
url: "https://onebag.travel/compare/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/x6qr9w1lre/deuter-up-sydney/"
title: "Boundary Supply -- Prima System Modular Travel Backpack vs Deuter UP Sydney"
description: "Boundary Supply -- Prima System Modular Travel Backpack vs Deuter UP Sydney: capacity, weight, dimensions and how many airlines accept each as a carry-on…"
source: "https://onebag.travel/compare/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/x6qr9w1lre/deuter-up-sydney/"
---
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3.  Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter UP Sydney

# Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter UP Sydney

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

## [Boundary Supply -- Prima System Modular Travel Backpack](https://onebag.travel/carryon/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/)

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

![Front facing view of the Boundary Supply -- Prima System Modular Travel Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1619698435/carryons/Boundary_Supply_Prima_System_jsyefe.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>22 L</td></tr><tr><td>Weight</td><td>1.4 kg</td></tr><tr><td>Dimensions</td><td>49×28×13 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$268</td></tr></tbody></table>

## Feature by feature

| Boundary Supply -- Prima System Modular Travel Backpack | Feature | Deuter UP Sydney |
| --- | --- | --- |
| Storage |
| Y | Compression | N |
| 30L | Expanded Capacity | None |
| 0 | Opening | 3 |
| Y | Passport | N |
| Y | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 17in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Nywool, Nylon, Kodra Nylon</td><td>300D PES Ripstop, 500D rPES</td></tr></tbody></table>

## [Deuter UP Sydney](https://onebag.travel/carryon/x6qr9w1lre/deuter-up-sydney/)

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

![Front facing view of the Deuter UP Sydney](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1621568500/carryons/Deuter_UP_Sydney_py3few.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>22 L</td></tr><tr><td>Weight</td><td>0.88 kg</td></tr><tr><td>Dimensions</td><td>50×30×16 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$150</td></tr></tbody></table>

## Key differences between the Boundary Supply -- Prima System Modular Travel Backpack and Deuter UP Sydney

-   **Compression straps:** Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter UP Sydney.
-   **Opening:** Other on the Boundary Supply -- Prima System Modular Travel Backpack; Top flap on the Deuter UP Sydney.
-   **Passport pocket:** Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter UP Sydney.
-   **Luggage passthrough:** Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Deuter UP Sydney.
-   **Laptop sleeve:** 17in on the Boundary Supply -- Prima System Modular Travel Backpack; 15in on the Deuter UP Sydney.

Both have: backpack straps, hip belt, 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. 173 accept both. 1 accept only the Boundary Supply -- Prima System Modular Travel Backpack, and 0 accept only the Deuter UP Sydney.

### Only the Boundary Supply -- Prima System Modular Travel Backpack fits

Great Lakes Airlines.

## Boundary Supply -- Prima System Modular Travel Backpack vs. Deuter UP Sydney: which should you pack?

The **Boundary Supply -- Prima System Modular Travel Backpack** carries the same capacity as the **Deuter UP Sydney** (22L vs. 22L), while the **Deuter UP Sydney** is the lighter pack at 0.88kg (vs. 1.4kg). For carry-on flexibility, the **Boundary Supply -- Prima System Modular Travel Backpack** fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply -- Prima System Modular Travel Backpack; if you want to travel lighter, the Deuter UP Sydney is the better call.