---
url: "https://onebag.travel/compare/3p8dg0j5ir/alpha-one-niner-evade-1-5-backpack/5nit7l6pc9/boundary-supply-errant-daypack/"
title: "Alpha One-Niner Evade 1.5 Backpack vs Boundary Supply Errant Daypack"
description: "Alpha One-Niner Evade 1.5 Backpack vs Boundary Supply Errant Daypack: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by…"
source: "https://onebag.travel/compare/3p8dg0j5ir/alpha-one-niner-evade-1-5-backpack/5nit7l6pc9/boundary-supply-errant-daypack/"
---
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3.  Alpha One-Niner Evade 1.5 Backpack vs. Boundary Supply Errant Daypack

# Alpha One-Niner Evade 1.5 Backpack vs. Boundary Supply Errant Daypack

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

## [Alpha One-Niner Evade 1.5 Backpack](https://onebag.travel/carryon/3p8dg0j5ir/alpha-one-niner-evade-1-5-backpack/)

by [Alpha One-Niner](https://onebag.travel/carryons/?brands=Alpha One-Niner)

![Front facing view of the Alpha One-Niner Evade 1.5 Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990330/carryons/alpha-one-niner-evade-1-5-backpack-3p8dg0j5ir.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>1.5 kg</td></tr><tr><td>Dimensions</td><td>47×31×14 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$225</td></tr></tbody></table>

## Feature by feature

| Alpha One-Niner Evade 1.5 Backpack | Feature | Boundary Supply Errant Daypack |
| --- | --- | --- |
| Storage |
| 2 | Compression | 1 |
| None | Expanded Capacity | None |
| 1 | Opening | 1 |
| back | Passport | back |
| N | Passthrough | Y |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| 16in | Laptop | 15in |
| 5 | Main Compartments | 5 |
| Y | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 1, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Dimension-Polyant’s X42, Cordura 500D Nylon, 630D HD Twill</td><td>500D Duramax Kodra</td></tr></tbody></table>

## [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>

## Key differences between the Alpha One-Niner Evade 1.5 Backpack and Boundary Supply Errant Daypack

-   **Compression straps:** 2 on the Alpha One-Niner Evade 1.5 Backpack; 1 on the Boundary Supply Errant Daypack.
-   **Luggage passthrough:** No on the Alpha One-Niner Evade 1.5 Backpack; Yes on the Boundary Supply Errant Daypack.
-   **Laptop sleeve:** 16in on the Alpha One-Niner Evade 1.5 Backpack; 15in on the Boundary Supply Errant Daypack.
-   **Built-in organizer:** Yes on the Alpha One-Niner Evade 1.5 Backpack; No on the Boundary Supply Errant Daypack.
-   **Water bottle pockets:** 2, side on the Alpha One-Niner Evade 1.5 Backpack; 1, side on the Boundary Supply Errant Daypack.

Both have: passport pocket, backpack straps, hip belt, sternum strap, water resistant.

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

We checked both bags against the carry-on size limits of 189 airlines. 174 accept both. 0 accept only the Alpha One-Niner Evade 1.5 Backpack, and 2 accept only the Boundary Supply Errant Daypack.

### Only the Boundary Supply Errant Daypack fits

Air Niugini, Great Lakes Airlines.

## Alpha One-Niner Evade 1.5 Backpack vs. Boundary Supply Errant Daypack: which should you pack?

The **Alpha One-Niner Evade 1.5 Backpack** carries the same capacity as the **Boundary Supply Errant Daypack** (22L vs. 22L), while the **Boundary Supply Errant Daypack** is the lighter pack at 1.4kg (vs. 1.5kg). 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 Alpha One-Niner Evade 1.5 Backpack; if you want to travel lighter, the Boundary Supply Errant Daypack is the better call.