---
url: "https://onebag.travel/compare/9uzpl3evsy/stm-haven/jihszp227a/ryu-flex-pack-20l/"
title: "STM Haven vs Ryu Flex Pack 20L - One Bag Travel"
description: "STM Haven vs Ryu Flex Pack 20L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/9uzpl3evsy/stm-haven/jihszp227a/ryu-flex-pack-20l/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  STM Haven vs. Ryu Flex Pack 20L

# STM Haven vs. Ryu Flex Pack 20L

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

## [STM Haven](https://onebag.travel/carryon/9uzpl3evsy/stm-haven/)

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

![Front facing view of the STM Haven](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601598213/carryons/haven-moroccan-blue-front-angle_v4wuxs.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>0.9 kg</td></tr><tr><td>Dimensions</td><td>47×28×13 cm</td></tr><tr><td>Airline fit</td><td>93%</td></tr><tr><td>Price</td><td>$100</td></tr></tbody></table>

## Feature by feature

| STM Haven | Feature | Ryu Flex Pack 20L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | N |
| N | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 5 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | 1 |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Polyester</td><td>100% nylon with silicone coating and Polygiene® finish</td></tr></tbody></table>

## [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>

## Key differences between the STM Haven and Ryu Flex Pack 20L

-   **Sternum strap:** No on the STM Haven; Removable on the Ryu Flex Pack 20L.
-   **Main compartments:** 5 on the STM Haven; 1 on the Ryu Flex Pack 20L.
-   **Water bottle pockets:** No on the STM Haven; 1 on the Ryu Flex Pack 20L.

Both have: backpack straps, laptop sleeve, built-in organizer, water resistant.

## Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 174 accept both. 2 accept only the STM Haven, and 3 accept only the Ryu Flex Pack 20L.

### Only the STM Haven fits

Air Niugini, Great Lakes Airlines.

### Only the Ryu Flex Pack 20L fits

American Eagle, easyJet, Ravn Alaska.

## STM Haven vs. Ryu Flex Pack 20L: which should you pack?

The **STM Haven** carries the same capacity as the **Ryu Flex Pack 20L** (20L vs. 20L), 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 STM Haven; if you want to travel lighter, the STM Haven is the better call.