---
url: "https://onebag.travel/compare/erxfjwo6e2/ortlieb-velocity-ps/fp6w6mo3ab/millican-smith-18l/"
title: "Ortlieb Velocity PS vs Millican Smith 18L - One Bag Travel"
description: "Ortlieb Velocity PS vs Millican Smith 18L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/erxfjwo6e2/ortlieb-velocity-ps/fp6w6mo3ab/millican-smith-18l/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Ortlieb Velocity PS vs. Millican Smith 18L

# Ortlieb Velocity PS vs. Millican Smith 18L

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

## [Ortlieb Velocity PS](https://onebag.travel/carryon/erxfjwo6e2/ortlieb-velocity-ps/)

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

![Front facing view of the Ortlieb Velocity PS](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1630921805/carryons/Ortlieb_Velocity_PS_eugw6c.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>23 L</td></tr><tr><td>Weight</td><td>0.79 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>

## Feature by feature

| Ortlieb Velocity PS | Feature | Millican Smith 18L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 2 | Opening | 2 |
| N | Passport | side |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 1 | Main Compartments | 3 |
|  | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>PS33</td><td>Weatherproof Bionic Canvas</td></tr></tbody></table>

## [Millican Smith 18L](https://onebag.travel/carryon/fp6w6mo3ab/millican-smith-18l/)

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

![Front facing view of the Millican Smith 18L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601586503/carryons/mavericks-Smith-18l-slate-front_1024x_tzt5sd.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>18 L</td></tr><tr><td>Weight</td><td>0.9 kg</td></tr><tr><td>Dimensions</td><td>50×28×10 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$130</td></tr></tbody></table>

## Key differences between the Ortlieb Velocity PS and Millican Smith 18L

-   **Passport pocket:** No on the Ortlieb Velocity PS; Side on the Millican Smith 18L.
-   **Main compartments:** 1 on the Ortlieb Velocity PS; 3 on the Millican Smith 18L.

Both have: backpack straps, hip belt, sternum strap, laptop sleeve, water resistant.

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

We checked both bags against the carry-on size limits of 189 airlines. 173 accept both. 0 accept only the Ortlieb Velocity PS, and 1 accept only the Millican Smith 18L.

### Only the Millican Smith 18L fits

Great Lakes Airlines.

## Ortlieb Velocity PS vs. Millican Smith 18L: which should you pack?

The **Ortlieb Velocity PS** carries 5L more than the **Millican Smith 18L** (23L vs. 18L), while the **Ortlieb Velocity PS** is the lighter pack at 0.79kg (vs. 0.9kg). For carry-on flexibility, the **Ortlieb Velocity PS** fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Ortlieb Velocity PS; if you want to travel lighter, the Ortlieb Velocity PS is the better call.