---
url: "https://onebag.travel/compare/53yii2r1hk/waterfield-air-porter/k4334kffo5/united-by-blue-revolution-25l-convertible-carryall/"
title: "Waterfield Air Porter vs United by Blue (R)evolution 25L Convertible Carryall"
description: "Waterfield Air Porter vs United by Blue (R)evolution 25L Convertible Carryall: capacity, weight, dimensions and how many airlines accept each as a carry-on…"
source: "https://onebag.travel/compare/53yii2r1hk/waterfield-air-porter/k4334kffo5/united-by-blue-revolution-25l-convertible-carryall/"
---
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3.  Waterfield Air Porter vs. United by Blue (R)evolution 25L Convertible Carryall

# Waterfield Air Porter vs. United by Blue (R)evolution 25L Convertible Carryall

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

## [Waterfield Air Porter](https://onebag.travel/carryon/53yii2r1hk/waterfield-air-porter/)

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

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>22 L</td></tr><tr><td>Weight</td><td>1.3 kg</td></tr><tr><td>Dimensions</td><td>42×30×18 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$420</td></tr></tbody></table>

## Feature by feature

| Waterfield Air Porter | Feature | United by Blue (R)evolution 25L Convertible Carryall |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top | Passport | front |
| Y | Passthrough | N |
| Carry |
| hideable | Backpack | hideable |
| N | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 7 | Main Compartments | 2 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>1680 Denier black Ballistic nylon</td><td></td></tr></tbody></table>

## [United by Blue (R)evolution 25L Convertible Carryall](https://onebag.travel/carryon/k4334kffo5/united-by-blue-revolution-25l-convertible-carryall/)

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

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>25 L</td></tr><tr><td>Weight</td><td>0 kg</td></tr><tr><td>Dimensions</td><td>39×34×13 cm</td></tr><tr><td>Airline fit</td><td>96%</td></tr><tr><td>Price</td><td>$120</td></tr></tbody></table>

## Key differences between the Waterfield Air Porter and United by Blue (R)evolution 25L Convertible Carryall

-   **Passport pocket:** Top on the Waterfield Air Porter; Front on the United by Blue (R)evolution 25L Convertible Carryall.
-   **Luggage passthrough:** Yes on the Waterfield Air Porter; No on the United by Blue (R)evolution 25L Convertible Carryall.
-   **Main compartments:** 7 on the Waterfield Air Porter; 2 on the United by Blue (R)evolution 25L Convertible Carryall.

Both have: backpack straps, sternum strap, 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. 179 accept both. 1 accept only the Waterfield Air Porter, and 2 accept only the United by Blue (R)evolution 25L Convertible Carryall.

### Only the Waterfield Air Porter fits

Air Niugini.

### Only the United by Blue (R)evolution 25L Convertible Carryall fits

VivaColombia, Volaris.

## Waterfield Air Porter vs. United by Blue (R)evolution 25L Convertible Carryall: which should you pack?

The **United by Blue (R)evolution 25L Convertible Carryall** carries 3L more than the **Waterfield Air Porter** (22L vs. 25L), and the two are closely matched on weight. For carry-on flexibility, the **United by Blue (R)evolution 25L Convertible Carryall** fits 96% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the United by Blue (R)evolution 25L Convertible Carryall; if you want to travel lighter, the Waterfield Air Porter is the better call.