---
url: "https://onebag.travel/compare/5nit7l6pc9/boundary-supply-errant-daypack/asynuuvno8/the-brown-buffalo-conceal-pack-21l/"
title: "Boundary Supply Errant Daypack vs The Brown Buffalo Conceal Pack 21L"
description: "Boundary Supply Errant Daypack vs The Brown Buffalo Conceal Pack 21L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by…"
source: "https://onebag.travel/compare/5nit7l6pc9/boundary-supply-errant-daypack/asynuuvno8/the-brown-buffalo-conceal-pack-21l/"
---
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3.  Boundary Supply Errant Daypack vs. The Brown Buffalo Conceal Pack 21L

# Boundary Supply Errant Daypack vs. The Brown Buffalo Conceal Pack 21L

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

## [Boundary Supply Errant Daypack](https://onebag.travel/carryon/5nit7l6pc9/boundary-supply-errant-daypack/)

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

![Front facing view of the Boundary Supply Errant Daypack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601602232/carryons/boundrysupplyerrant_jn6yol.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>48×26×14 cm</td></tr><tr><td>Airline fit</td><td>93%</td></tr><tr><td>Price</td><td>$269</td></tr></tbody></table>

## Feature by feature

| Boundary Supply Errant Daypack | Feature | The Brown Buffalo Conceal Pack 21L |
| --- | --- | --- |
| Storage |
| 1 | Compression | N |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| back | Passport | front |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 5 | Main Compartments | 2 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1, side | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>500D Duramax Kodra</td><td>Challenge® Sailcloth EPX400</td></tr></tbody></table>

## [The Brown Buffalo Conceal Pack 21L](https://onebag.travel/carryon/asynuuvno8/the-brown-buffalo-conceal-pack-21l/)

by [The Brown Buffalo](https://onebag.travel/carryons/?brands=The Brown Buffalo)

![Front facing view of the The Brown Buffalo Conceal Pack 21L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990440/carryons/the-brown-buffalo-conceal-pack-21l-asynuuvno8.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>1.3 kg</td></tr><tr><td>Dimensions</td><td>50×30×15 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$325</td></tr></tbody></table>

## Key differences between the Boundary Supply Errant Daypack and The Brown Buffalo Conceal Pack 21L

-   **Compression straps:** 1 on the Boundary Supply Errant Daypack; No on the The Brown Buffalo Conceal Pack 21L.
-   **Passport pocket:** Back on the Boundary Supply Errant Daypack; Front on the The Brown Buffalo Conceal Pack 21L.
-   **Hip belt:** Removable on the Boundary Supply Errant Daypack; No on the The Brown Buffalo Conceal Pack 21L.
-   **Main compartments:** 5 on the Boundary Supply Errant Daypack; 2 on the The Brown Buffalo Conceal Pack 21L.
-   **Water bottle pockets:** 1, side on the Boundary Supply Errant Daypack; No on the The Brown Buffalo Conceal Pack 21L.

Both have: luggage passthrough, backpack straps, 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. 3 accept only the Boundary Supply Errant Daypack, and 0 accept only the The Brown Buffalo Conceal Pack 21L.

### Only the Boundary Supply Errant Daypack fits

Great Lakes Airlines, Regional Express, Virgin Australia.

## Boundary Supply Errant Daypack vs. The Brown Buffalo Conceal Pack 21L: which should you pack?

The **Boundary Supply Errant Daypack** carries 1L more than the **The Brown Buffalo Conceal Pack 21L** (22L vs. 21L), while the **The Brown Buffalo Conceal Pack 21L** is the lighter pack at 1.3kg (vs. 1.4kg). For carry-on flexibility, the **Boundary Supply Errant Daypack** fits 93% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Boundary Supply Errant Daypack; if you want to travel lighter, the The Brown Buffalo Conceal Pack 21L is the better call.