---
url: "https://onebag.travel/compare/jihszp227a/ryu-flex-pack-20l/p7tei3ui39/boundary-supply-rennen-recycled-daypack/"
title: "Ryu Flex Pack 20L vs Boundary Supply Rennen Recycled Daypack"
description: "Ryu Flex Pack 20L vs Boundary Supply Rennen Recycled Daypack: 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/p7tei3ui39/boundary-supply-rennen-recycled-daypack/"
---
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3.  Ryu Flex Pack 20L vs. Boundary Supply Rennen Recycled Daypack

# Ryu Flex Pack 20L vs. Boundary Supply Rennen Recycled Daypack

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 | Boundary Supply Rennen Recycled Daypack |
| --- | --- | --- |
| 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 |
| removable | Sternum Strap | N |
| Inside |
| 15in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | N |
| 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>RE-3™ 600/500D Eco Cordura®</td></tr></tbody></table>

## [Boundary Supply Rennen Recycled Daypack](https://onebag.travel/carryon/p7tei3ui39/boundary-supply-rennen-recycled-daypack/)

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

![Front facing view of the Boundary Supply Rennen Recycled Daypack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1620707616/carryons/Boundary_Supply_rennen_Recycled_xb5dhq.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>0.9 kg</td></tr><tr><td>Dimensions</td><td>46×28×18 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$140</td></tr></tbody></table>

## Key differences between the Ryu Flex Pack 20L and Boundary Supply Rennen Recycled Daypack

-   **Sternum strap:** Removable on the Ryu Flex Pack 20L; No on the Boundary Supply Rennen Recycled Daypack.
-   **Built-in organizer:** Yes on the Ryu Flex Pack 20L; No on the Boundary Supply Rennen Recycled Daypack.

Both have: backpack straps, laptop sleeve, 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. 177 accept both. 0 accept only the Ryu Flex Pack 20L, and 2 accept only the Boundary Supply Rennen Recycled Daypack.

### Only the Boundary Supply Rennen Recycled Daypack fits

Air Niugini, Great Lakes Airlines.

## Ryu Flex Pack 20L vs. Boundary Supply Rennen Recycled Daypack: which should you pack?

The **Boundary Supply Rennen Recycled Daypack** 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 **Boundary Supply Rennen Recycled Daypack** fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Rennen Recycled Daypack; if you want to travel lighter, the Boundary Supply Rennen Recycled Daypack is the better call.