---
url: "https://onebag.travel/compare/k4334kffo5/united-by-blue-revolution-25l-convertible-carryall/zlayhd2vuw/topo-designs-trip/"
title: "United by Blue (R)evolution 25L Convertible Carryall vs Topo Designs Trip"
description: "United by Blue (R)evolution 25L Convertible Carryall vs Topo Designs Trip: capacity, weight, dimensions and how many airlines accept each as a carry-on, side…"
source: "https://onebag.travel/compare/k4334kffo5/united-by-blue-revolution-25l-convertible-carryall/zlayhd2vuw/topo-designs-trip/"
---
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3.  United by Blue (R)evolution 25L Convertible Carryall vs. Topo Designs Trip

# United by Blue (R)evolution 25L Convertible Carryall vs. Topo Designs Trip

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

## [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>

## Feature by feature

| United by Blue (R)evolution 25L Convertible Carryall | Feature | Topo Designs Trip |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| front | Passport | front |
| N | Passthrough | N |
| Carry |
| hideable | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | N |
| Inside |
| 15in | Laptop | 11in |
| 2 | Main Compartments | 2 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td></td><td></td></tr></tbody></table>

## [Topo Designs Trip](https://onebag.travel/carryon/zlayhd2vuw/topo-designs-trip/)

![Front facing view of the Topo Designs Trip](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601125579/carryons/topotrip_ymur5u.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>8.4 L</td></tr><tr><td>Weight</td><td>0.5 kg</td></tr><tr><td>Dimensions</td><td>41×21×11 cm</td></tr><tr><td>Airline fit</td><td>96%</td></tr><tr><td>Price</td><td>$170</td></tr></tbody></table>

## Key differences between the United by Blue (R)evolution 25L Convertible Carryall and Topo Designs Trip

-   **Backpack straps:** Hideable on the United by Blue (R)evolution 25L Convertible Carryall; Yes on the Topo Designs Trip.
-   **Sternum strap:** Removable on the United by Blue (R)evolution 25L Convertible Carryall; No on the Topo Designs Trip.
-   **Laptop sleeve:** 15in on the United by Blue (R)evolution 25L Convertible Carryall; 11in on the Topo Designs Trip.
-   **Water bottle pockets:** 2, side on the United by Blue (R)evolution 25L Convertible Carryall; No on the Topo Designs Trip.

Both have: passport pocket, 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. 2 accept only the United by Blue (R)evolution 25L Convertible Carryall, and 2 accept only the Topo Designs Trip.

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

VivaColombia, Volaris.

### Only the Topo Designs Trip fits

Air Niugini, Great Lakes Airlines.

## United by Blue (R)evolution 25L Convertible Carryall vs. Topo Designs Trip: which should you pack?

The **United by Blue (R)evolution 25L Convertible Carryall** carries 16.6L more than the **Topo Designs Trip** (25L vs. 8.4L), 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 Topo Designs Trip is the better call.