---
url: "https://onebag.travel/compare/66ku3o331l/goruck-gr1-usa-x-pac/fp6w6mo3ab/millican-smith-18l/"
title: "GORUCK GR1 USA - X-PAC vs Millican Smith 18L"
description: "GORUCK GR1 USA - X-PAC 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/66ku3o331l/goruck-gr1-usa-x-pac/fp6w6mo3ab/millican-smith-18l/"
---
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3.  GORUCK GR1 USA - X-PAC vs. Millican Smith 18L

# GORUCK GR1 USA - X-PAC vs. Millican Smith 18L

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

## [GORUCK GR1 USA - X-PAC](https://onebag.travel/carryon/66ku3o331l/goruck-gr1-usa-x-pac/)

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

![Front facing view of the GORUCK GR1 USA - X-PAC](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990480/carryons/goruck-gr1-usa-x-pac-66ku3o331l.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>21 L</td></tr><tr><td>Weight</td><td>1 kg</td></tr><tr><td>Dimensions</td><td>46×29×14 cm</td></tr><tr><td>Airline fit</td><td>94%</td></tr><tr><td>Price</td><td>$335</td></tr></tbody></table>

## Feature by feature

| GORUCK GR1 USA - X-PAC | Feature | Millican Smith 18L |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 2 |
| top | Passport | side |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | removable |
| N | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 3 | Main Compartments | 3 |
| N | 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>XPAC VX21</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 GORUCK GR1 USA - X-PAC and Millican Smith 18L

-   **Opening:** Clamshell on the GORUCK GR1 USA - X-PAC; Rolltop on the Millican Smith 18L.
-   **Passport pocket:** Top on the GORUCK GR1 USA - X-PAC; Side on the Millican Smith 18L.
-   **Hip belt:** No on the GORUCK GR1 USA - X-PAC; Removable on the Millican Smith 18L.
-   **Sternum strap:** No on the GORUCK GR1 USA - X-PAC; Removable on the Millican Smith 18L.

Both have: backpack straps, 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. 5 accept only the GORUCK GR1 USA - X-PAC, and 1 accept only the Millican Smith 18L.

### Only the GORUCK GR1 USA - X-PAC fits

American Eagle, easyJet, Ravn Alaska, Regional Express, Virgin Australia.

### Only the Millican Smith 18L fits

Great Lakes Airlines.

## GORUCK GR1 USA - X-PAC vs. Millican Smith 18L: which should you pack?

The **GORUCK GR1 USA - X-PAC** carries 3L more than the **Millican Smith 18L** (21L vs. 18L), while the **Millican Smith 18L** is the lighter pack at 0.9kg (vs. 1kg). For carry-on flexibility, the **GORUCK GR1 USA - X-PAC** fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the GORUCK GR1 USA - X-PAC; if you want to travel lighter, the Millican Smith 18L is the better call.