---
url: "https://onebag.travel/compare/jihszp227a/ryu-flex-pack-20l/x6qr9w1lre/deuter-up-sydney/"
title: "Ryu Flex Pack 20L vs Deuter UP Sydney - One Bag Travel"
description: "Ryu Flex Pack 20L vs Deuter UP Sydney: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/jihszp227a/ryu-flex-pack-20l/x6qr9w1lre/deuter-up-sydney/"
---
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3.  Ryu Flex Pack 20L vs. Deuter UP Sydney

# Ryu Flex Pack 20L vs. Deuter UP Sydney

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

## [Ryu Flex Pack 20L](https://onebag.travel/carryon/jihszp227a/ryu-flex-pack-20l/)

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

![Front facing view of the Ryu Flex Pack 20L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1634034107/carryons/Ryu_Flex_Pack_syhtcj.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>20 L</td></tr><tr><td>Weight</td><td>0 kg</td></tr><tr><td>Dimensions</td><td>46×31×18 cm</td></tr><tr><td>Airline fit</td><td>94%</td></tr><tr><td>Price</td><td>$98</td></tr></tbody></table>

## Feature by feature

| Ryu Flex Pack 20L | Feature | Deuter UP Sydney |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 3 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 15in | 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>100% nylon with silicone coating and Polygiene® finish</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 Ryu Flex Pack 20L and Deuter UP Sydney

-   **Opening:** Top zip on the Ryu Flex Pack 20L; Top flap on the Deuter UP Sydney.
-   **Hip belt:** No on the Ryu Flex Pack 20L; Removable on the Deuter UP Sydney.

Both have: 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. 172 accept both. 5 accept only the Ryu Flex Pack 20L, and 1 accept only the Deuter UP Sydney.

### Only the Ryu Flex Pack 20L fits

American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.

### Only the Deuter UP Sydney fits

Air Niugini.

## Ryu Flex Pack 20L vs. Deuter UP Sydney: which should you pack?

The **Deuter UP Sydney** carries 2L more than the **Ryu Flex Pack 20L** (20L vs. 22L), and the two are closely matched on weight. For carry-on flexibility, the **Ryu Flex Pack 20L** fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Deuter UP Sydney; if you want to travel lighter, the Deuter UP Sydney is the better call.