---
url: "https://onebag.travel/carryon/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/"
title: "Boundary Supply -- Prima System Modular Travel Backpack Details - One Bag Travel"
description: "Reviews, airline compatibility, and specifications of the Boundary Supply -- Prima System Modular Travel Backpack carry-on travel backpack."
source: "https://onebag.travel/carryon/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/"
---
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3.  Boundary Supply -- Prima System Modular Travel Backpack

# Boundary Supply -- Prima System Modular Travel Backpack

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

Capacity 22 L

Weight 1.4 kg 3.13 lbs

Dimensions 49×28×13 cm 19×11×5 in

Airline fit 92 % of airlines

![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)

**Deeper stats**



<table class="table table-sm table-borderless" id="carryon-details-table"><tbody><tr><td><span class="underline" title="Litres of capacity per unit of pack weight — higher means you carry more for less.">Capacity-to-weight</span></td><td><span class="metric-value">15.7 L/kg</span> <span class="imperial-value">7 L/lb</span></td><td><span class="badge badge-danger">Low</span></td></tr><tr><td><span class="underline" title="Total interior volume implied by the outer dimensions.">Cubic space</span></td><td><span class="metric-value">17.8 L</span> <span class="imperial-value">1045 in³</span></td><td></td></tr><tr><td><span class="underline" title="Gap between the bag's outer volume and its rated capacity — lower packs more efficiently.">Rated vs. shell</span></td><td><span class="metric-value">-4 L</span><span class="imperial-value">-4 L</span></td><td><span class="badge badge-success">Low</span></td></tr></tbody></table>

**Airline Compatibility**

✈️ 92% (174/189)

This bag is within the published carry-on limit of 92% of the 189 airlines that publish one.

[Link to Manufacturer](https://www.boundarysupply.com/products/prima-system)

## Our verdict

### Reasons to buy

-   Comes with an organizer and a camera case.
-   Highly customizable and can adapt to your needs. You can leave the camera case if you don't need it, or just use it as a fanny pack or shoulder camera bag.
-   Offers a lot of organization even without the organizer and the camera case.
-   The materials used in this bag are sustainable, high quality, and durable so you get what you pay for.

### Things to consider

-   The integration of the camera case inside the bag takes a lot of space in the main compartment.
-   The whole thing altogether is quite heavy.
-   Could use some external pockets for your small things.

## What reviewers said

-   "I've used the Prima System for my work and short vacations and I really love using this bag! It's a joy to use and I think that it looks pretty cool. It does not have many organizational pockets that's why I combine the bag with my PD Tech Pouch and it fits very well (w/o the Verge Case)."
-   "I am an amateur photographer and was a little apprehensive of the price of the prima. But it was 100% worth it. The construction materials/design and customer service were all incredible. They even responded with the care that I was an individual that mattered, which is rare nowadays!"
-   "I've been using this bag for more than a week now in my travels and so far it didn't disappoint me. I can easily pack 4 pairs of clothes and there is still more than half of the space available. It's versatile enough that I also use this as an everyday backpack."

## Reviews from around the web

**EPIC REVIEW • Boundary Supply Prima System**
[www.thebrokebackpacker.com](https://www.thebrokebackpacker.com/boundary-supply-prima-system-backpack-review/)

> The Prima System is an awesome backpack for commuting, everyday use, and small travel trips. When it comes to security, durability, and efficiency, this is one of the best travel backpacks I’ve used, and it’s easy to see why this bag made it on Men’s Health Gear of the Year Review.

**REVIEW: BOUNDARY SUPPLY’S PRIMA SYSTEM MODULAR BACKPACK**
[www.indietraveller.co](https://www.indietraveller.co/prima-system-modular-travel-backpack-review/)

> Overall this is a high-quality and clever backpack that I’m very comfortable recommending to anyone, and to photographers even more.

**BOUNDARY PRIMA MODULAR TRAVEL BACKPACK REVIEW**
[shotkit.com](https://shotkit.com/boundary-prima-modular-backpack-review/)

> The Prima Backpack feels incredibly sturdy and purposeful, the materials are tough and very well made. It doesn’t mark from leaning up or being dropped on to the ground and the bottom lining doubles as extra protection.

## Features

<table class="table table-sm  table-borderless" id="carryon-details-table"><tbody><tr><td colspan="2" class="border-bottom"><strong>Storage</strong></td></tr><tr><td><span class="underline" title="Does this carry-on travel backpack have a way to compress the contents to make them smaller?">Compression</span></td><td>Yes</td></tr><tr><td><span class="underline" title="If this carry-on expands, how much does it expand by?">Expanded Capacity</span></td><td><span>30L</span></td></tr><tr><td><span class="underline" title="The type of opening does this carry-on travel backpack have in degrees.">Opening</span></td><td>Other</td></tr><tr><td><span class="underline" title="Does this carry-on travel backpack have a dedicated passport holder?">Passport</span></td><td>Yes</td></tr><tr><td><span class="underline" title="Does this carry-on travel backpack have a pass-through opening so you can reach the main compartments without fully opening the bag?">Passthrough</span></td><td>Yes</td></tr><tr><td colspan="2" class="border-bottom"><strong>Carry</strong></td></tr><tr><td><span class="underline" title="Does this have backpack straps?">Backpack</span></td><td>Yes</td></tr><tr><td><span class="underline" title="Does this carry-on travel backpack have a belt that goes around your hip to help support the weight of the bag?">Hip Belt</span></td><td>Removable</td></tr><tr><td><span class="underline" title="Does this carry-on travel backpack have a strap that goes around your upper chest so help support the weight of the bag?">Sternum Strap</span></td><td>Removable</td></tr><tr><td colspan="2" class="border-bottom"><strong>Inside</strong></td></tr><tr><td><span class="underline" title="What size laptop sleeve can this carry-on travel backpack fit?">Laptop</span></td><td>17in</td></tr><tr><td><span class="underline" title="The number of main compartments this bag has.  Side and small compartments don't count.">Main Compartments</span></td><td>1</td></tr><tr><td><span class="underline" title="Does the main compartment of the carry-on travel backpack have features which help you organize?">Organizer</span></td><td>Yes</td></tr><tr><td colspan="2" class="border-bottom"><strong>Outside</strong></td></tr><tr><td><span class="underline" title="Does the backpack have a hardshell component to protect your packed items?">Hard Shell</span></td><td>No</td></tr><tr><td><span class="underline" title="Does this carry on have a rain-fly to protect it from the weather?">Rain-fly</span></td><td>No</td></tr><tr><td><span class="underline" title="The number of bottle holders this bag has">Water Bottle Holder</span></td><td>1</td></tr><tr><td><span class="underline" title="Is this carry-on travel backpack made with water resistant material?">Water Resistant</span></td><td>Yes</td></tr><tr><td colspan="2"><span class="underline" title="What type of material is this carry-on travel backpack made of?"><strong>Material:</strong></span><br>Nywool, Nylon, Kodra Nylon</td></tr></tbody></table>

## Fits the carry-on limits of 174 airlines

Adria Airways Aegean Airlines Aer Lingus Aeroflot Aerolineas Argentinas Aeromexico Air Asia Air Astana Air Baltic Air Canada Air Caraibes Air China Air Europa Air France Air India Air Koryo Air Macau Air Malta Air Mauritius Air New Zealand Air Niugini Air Nostrum Air Serbia Air Seychelles Air Tahiti Nui Air Wisconsin AirAsiaX Alaska Airlines All Nipon Airways Allegiant Air American Airlines ANA Asiana Airlines ATA Airlines Atlas Global Austrian Avianca Azerbaijan Airlines Azul Airlines Azul Linhas Bahamasair Bangkok Airways Belavia Biman Bangladesh Blue Air Boliviana de Aviacion British Airways Brussels Airlines Bulgaria Air Cambodia Angkor Air Caribbean Airlines Cathay Pacific Cayman Airways Cebu Pacific China Airlines China Eastern China Southern CommutAir Conviasa Copa Airlines Croatia Air Cubana de Aviacion Czech Airlines Delta Airlines Dragonair EL AL Emirates Airlines Enter Air Ethiopian Airlines Etihad Airways Eurowings EVA Air Fiji Airways Finnair Flair Air flybe Frontier Airlines Garuda Indonesia Gol Linhas Aereas Great Lakes Airlines Hainan Airlines Hawaiian Airlines Hong Kong Airlines Iberia Icelandair Indigo InselAir Interjet Iran Air Iran Aseman Air Island Air Japan Airlines Jet Airways Jet2 jetBlue Airways Jetstar Airways Jetstar Asia Juneyao Airlines Kenya Airways KLM Korean Air Kulula Kuwait Air LATAM Liat Airlines LOT Polish Lufthansa Luxair Mahan Air Malaysia Airlines Mango Meridiana Fly Mesa Airlines Middle East Airlines Monarch Airlines Nordwind Airlines Norwegian Oman Air Onur Air Pakistan International Peach PenAir Philippine Airlines Porter Airlines Qantas Airways Qatar Airways Republic Airways Royal Air Morocco Royal Brunei Airlines Royal Jordanian Ryanair S7 SAS Scandinavian Saudi Arabian Airlines Scoot Shandong Airlines Shenzhen Airlines Sichuan Airlines SilkAir Silver Airways Singapore Airlines Sky Airlines Skywest, Inc. South African Airways Southwest Airlines SpiceJet Spirit Airlines SriLankan Airlines Sun Country Sun Express Swiss Int'l Air Lines TAAG Angola TAM Airlines TAP Air Portugal TAROM Thai Airways Tianjin Airlines (A320 & E190) Tiger Airways Trans States Travel Service Airlines TUI Turkish Airlines Ukraine International United Airlines Ural Airlines Uzbekistan Air Vietnam Airlines VIM Airlines (Closed) Virgin America Virgin Atlantic Volotea WestJet WOW Airlines Xiamen

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