---
url: "https://onebag.travel/compare/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/v1bcu8b7th/alpha-one-niner-recon-nine-evade-1-5/"
title: "Boundary Supply -- Prima System Modular Travel Backpack vs Alpha One-Niner Recon Nine Evade 1.5"
description: "Boundary Supply -- Prima System Modular Travel Backpack vs Alpha One-Niner Recon Nine Evade 1.5: capacity, weight, dimensions and how many airlines accept…"
source: "https://onebag.travel/compare/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/v1bcu8b7th/alpha-one-niner-recon-nine-evade-1-5/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Boundary Supply -- Prima System Modular Travel Backpack vs. Alpha One-Niner Recon Nine Evade 1.5

# Boundary Supply -- Prima System Modular Travel Backpack vs. Alpha One-Niner Recon Nine Evade 1.5

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

## [Boundary Supply -- Prima System Modular Travel Backpack](https://onebag.travel/carryon/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/)

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

![Front facing view of the Boundary Supply -- Prima System Modular Travel Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1619698435/carryons/Boundary_Supply_Prima_System_jsyefe.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>49×28×13 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$268</td></tr></tbody></table>

## Feature by feature

| Boundary Supply -- Prima System Modular Travel Backpack | Feature | Alpha One-Niner Recon Nine Evade 1.5 |
| --- | --- | --- |
| Storage |
| Y | Compression | Y |
| 30L | Expanded Capacity | None |
| 0 | Opening | 0 |
| Y | Passport | back |
| Y | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | N |
| removable | Sternum Strap | removable |
| Inside |
| 17in | Laptop | 17in |
| 1 | Main Compartments | 5 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 1 | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>Nywool, Nylon, Kodra Nylon</td><td>Solid Color 500D Nylonor Camouflage 500D Nylon Corduraor 420D Diamond Ripstop Nylon</td></tr></tbody></table>

## [Alpha One-Niner Recon Nine Evade 1.5](https://onebag.travel/carryon/v1bcu8b7th/alpha-one-niner-recon-nine-evade-1-5/)

![Front facing view of the Alpha One-Niner Recon Nine Evade 1.5](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601599054/carryons/alphaoneniner_zfpl6k.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>27 L</td></tr><tr><td>Weight</td><td>1.6 kg</td></tr><tr><td>Dimensions</td><td>47×31×18 cm</td></tr><tr><td>Airline fit</td><td>92%</td></tr><tr><td>Price</td><td>$160</td></tr></tbody></table>

## Key differences between the Boundary Supply -- Prima System Modular Travel Backpack and Alpha One-Niner Recon Nine Evade 1.5

-   **Passport pocket:** Yes on the Boundary Supply -- Prima System Modular Travel Backpack; Back on the Alpha One-Niner Recon Nine Evade 1.5.
-   **Luggage passthrough:** Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Alpha One-Niner Recon Nine Evade 1.5.
-   **Hip belt:** Removable on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Alpha One-Niner Recon Nine Evade 1.5.
-   **Main compartments:** 1 on the Boundary Supply -- Prima System Modular Travel Backpack; 5 on the Alpha One-Niner Recon Nine Evade 1.5.
-   **Water bottle pockets:** 1 on the Boundary Supply -- Prima System Modular Travel Backpack; 2 on the Alpha One-Niner Recon Nine Evade 1.5.

Both have: compression straps, backpack straps, sternum strap, laptop sleeve, built-in organizer, water resistant.

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

We checked both bags against the carry-on size limits of 189 airlines. 172 accept both. 2 accept only the Boundary Supply -- Prima System Modular Travel Backpack, and 2 accept only the Alpha One-Niner Recon Nine Evade 1.5.

### Only the Boundary Supply -- Prima System Modular Travel Backpack fits

Air Niugini, Great Lakes Airlines.

### Only the Alpha One-Niner Recon Nine Evade 1.5 fits

Regional Express, Virgin Australia.

## Boundary Supply -- Prima System Modular Travel Backpack vs. Alpha One-Niner Recon Nine Evade 1.5: which should you pack?

The **Alpha One-Niner Recon Nine Evade 1.5** carries 5L more than the **Boundary Supply -- Prima System Modular Travel Backpack** (22L vs. 27L), while the **Boundary Supply -- Prima System Modular Travel Backpack** is the lighter pack at 1.4kg (vs. 1.6kg). For carry-on flexibility, the **Boundary Supply -- Prima System Modular Travel Backpack** fits 92% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Alpha One-Niner Recon Nine Evade 1.5; if you want to travel lighter, the Boundary Supply -- Prima System Modular Travel Backpack is the better call.