---
url: "https://onebag.travel/compare/4oz6tcrfxi/bellroy-shift-backpack/ejp4u65swx/boundary-supply-errant-x-pac/"
title: "Bellroy Shift Backpack vs Boundary Supply Errant X-Pac"
description: "Bellroy Shift Backpack vs Boundary Supply Errant X-Pac: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/4oz6tcrfxi/bellroy-shift-backpack/ejp4u65swx/boundary-supply-errant-x-pac/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Bellroy Shift Backpack vs. Boundary Supply Errant X-Pac

# Bellroy Shift Backpack vs. Boundary Supply Errant X-Pac

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

## [Bellroy Shift Backpack](https://onebag.travel/carryon/4oz6tcrfxi/bellroy-shift-backpack/)

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

![Front facing view of the Bellroy Shift Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1620647001/carryons/Bellroy_Shift_Backpack_lnjdfn.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>1.25 kg</td></tr><tr><td>Dimensions</td><td>55×30×20 cm</td></tr><tr><td>Airline fit</td><td>86%</td></tr><tr><td>Price</td><td>$169</td></tr></tbody></table>

## Feature by feature

| Bellroy Shift Backpack | Feature | Boundary Supply Errant X-Pac |
| --- | --- | --- |
| Storage |
| N | Compression | Y |
| None | Expanded Capacity | None |
| 3 | Opening | 3 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | Y |
| Inside |
| 15in | Laptop | 17in |
| 1 | Main Compartments | 1 |
| N | 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>Venture-weave polyester</td><td>X-Pac</td></tr></tbody></table>

## [Boundary Supply Errant X-Pac](https://onebag.travel/carryon/ejp4u65swx/boundary-supply-errant-x-pac/)

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

![Front facing view of the Boundary Supply Errant X-Pac](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1620709756/carryons/Boundary_Supply_X-Pac_vfjtoh.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>1.4 kg</td></tr><tr><td>Dimensions</td><td>48×29×14 cm</td></tr><tr><td>Airline fit</td><td>93%</td></tr><tr><td>Price</td><td>$250</td></tr></tbody></table>

## Key differences between the Bellroy Shift Backpack and Boundary Supply Errant X-Pac

-   **Compression straps:** No on the Bellroy Shift Backpack; Yes on the Boundary Supply Errant X-Pac.
-   **Sternum strap:** Removable on the Bellroy Shift Backpack; Yes on the Boundary Supply Errant X-Pac.
-   **Laptop sleeve:** 15in on the Bellroy Shift Backpack; 17in on the Boundary Supply Errant X-Pac.

Both have: backpack straps, 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. 163 accept both. 0 accept only the Bellroy Shift Backpack, and 12 accept only the Boundary Supply Errant X-Pac.

### Only the Boundary Supply Errant X-Pac fits

Air Niugini, Belavia, Etihad Airways, Liat Airlines, Oman Air, Qatar Airways, Regional Express, Royal Jordanian, Scoot, Tiger Airways, Virgin Australia, WestJet.

## Bellroy Shift Backpack vs. Boundary Supply Errant X-Pac: which should you pack?

The **Bellroy Shift Backpack** carries the same capacity as the **Boundary Supply Errant X-Pac** (22L vs. 22L), while the **Bellroy Shift Backpack** is the lighter pack at 1.25kg (vs. 1.4kg). For carry-on flexibility, the **Boundary Supply Errant X-Pac** fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Bellroy Shift Backpack; if you want to travel lighter, the Bellroy Shift Backpack is the better call.