---
url: "https://onebag.travel/compare/avrdndboko/bellroy-apex-backpack/y1h7unap16/boundary-supply-rennen-x-pac-daypack/"
title: "Bellroy Apex Backpack vs Boundary Supply Rennen X-Pac Daypack"
description: "Bellroy Apex Backpack vs Boundary Supply Rennen X-Pac Daypack: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/avrdndboko/bellroy-apex-backpack/y1h7unap16/boundary-supply-rennen-x-pac-daypack/"
---
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3.  Bellroy Apex Backpack vs. Boundary Supply Rennen X-Pac Daypack

# Bellroy Apex Backpack vs. Boundary Supply Rennen X-Pac Daypack

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

## [Bellroy Apex Backpack](https://onebag.travel/carryon/avrdndboko/bellroy-apex-backpack/)

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

![Front facing view of the Bellroy Apex Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1618212133/carryons/Bellroy_Apex_Backpack_hpqehf.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>26 L</td></tr><tr><td>Weight</td><td>1.4 kg</td></tr><tr><td>Dimensions</td><td>55×33×20 cm</td></tr><tr><td>Airline fit</td><td>86%</td></tr><tr><td>Price</td><td>$449</td></tr></tbody></table>

## Feature by feature

| Bellroy Apex Backpack | Feature | Boundary Supply Rennen X-Pac Daypack |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | N |
| removable | Sternum Strap | N |
| Inside |
| 15in | Laptop | 15in |
| 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>Recycled Baida Nylon and premium, environmentally certified leather</td><td>Custom VX21 X-Pac material</td></tr></tbody></table>

## [Boundary Supply Rennen X-Pac Daypack](https://onebag.travel/carryon/y1h7unap16/boundary-supply-rennen-x-pac-daypack/)

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

![Front facing view of the Boundary Supply Rennen X-Pac Daypack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1620707394/carryons/Boundary_Supply_Rennen_tsojqe.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>0.9 kg</td></tr><tr><td>Dimensions</td><td>46×28×18 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$170</td></tr></tbody></table>

## Key differences between the Bellroy Apex Backpack and Boundary Supply Rennen X-Pac Daypack

-   **Opening:** Other on the Bellroy Apex Backpack; Top zip on the Boundary Supply Rennen X-Pac Daypack.
-   **Sternum strap:** Removable on the Bellroy Apex Backpack; No on the Boundary Supply Rennen X-Pac Daypack.

Both have: backpack straps, 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. 163 accept both. 0 accept only the Bellroy Apex Backpack, and 16 accept only the Boundary Supply Rennen X-Pac Daypack.

### Only the Boundary Supply Rennen X-Pac Daypack fits

Air Niugini, American Eagle, Belavia, easyJet, Etihad Airways, Great Lakes Airlines, Liat Airlines, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Jordanian, Scoot, Tiger Airways, Virgin Australia, WestJet.

## Bellroy Apex Backpack vs. Boundary Supply Rennen X-Pac Daypack: which should you pack?

The **Bellroy Apex Backpack** carries 4L more than the **Boundary Supply Rennen X-Pac Daypack** (26L vs. 22L), while the **Boundary Supply Rennen X-Pac Daypack** is the lighter pack at 0.9kg (vs. 1.4kg). For carry-on flexibility, the **Boundary Supply Rennen X-Pac Daypack** fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Bellroy Apex Backpack; if you want to travel lighter, the Boundary Supply Rennen X-Pac Daypack is the better call.