---
url: "https://onebag.travel/compare/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/uabyaa3lng/hynes-eagle-travel-40l-flight-approved-carry-on-backpack/"
title: "Boundary Supply -- Prima System Modular Travel Backpack vs Hynes Eagle Travel 40L Flight Approved Carry on Backpack"
description: "Boundary Supply -- Prima System Modular Travel Backpack vs Hynes Eagle Travel 40L Flight Approved Carry on Backpack: capacity, weight, dimensions and how many…"
source: "https://onebag.travel/compare/c0au43xw52/boundary-supply-prima-system-modular-travel-backpack/uabyaa3lng/hynes-eagle-travel-40l-flight-approved-carry-on-backpack/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Boundary Supply -- Prima System Modular Travel Backpack vs. Hynes Eagle Travel 40L Flight Approved Carry on Backpack

# Boundary Supply -- Prima System Modular Travel Backpack vs. Hynes Eagle Travel 40L Flight Approved Carry on Backpack

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 | Hynes Eagle Travel 40L Flight Approved Carry on Backpack |
| --- | --- | --- |
| Storage |
| Y | Compression | Y |
| 30L | Expanded Capacity | None |
| 0 | Opening | 1 |
| Y | Passport | Y |
| Y | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | Y |
| Inside |
| 17in | Laptop | 15in |
| 1 | Main Compartments | 1 |
| Y | Organizer | Y |
| 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>Nywool, Nylon, Kodra Nylon</td><td>100% Polyester</td></tr></tbody></table>

## [Hynes Eagle Travel 40L Flight Approved Carry on Backpack](https://onebag.travel/carryon/uabyaa3lng/hynes-eagle-travel-40l-flight-approved-carry-on-backpack/)

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

![Front facing view of the Hynes Eagle Travel 40L Flight Approved Carry on Backpack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1625829149/carryons/Hynes_Eagle_Travel_40L_Flight_Approved_Carry_on_Backpack_pfi7d7.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>40 L</td></tr><tr><td>Weight</td><td>1.1 kg</td></tr><tr><td>Dimensions</td><td>51×34×25 cm</td></tr><tr><td>Airline fit</td><td>39%</td></tr><tr><td>Price</td><td>$60</td></tr></tbody></table>

## Key differences between the Boundary Supply -- Prima System Modular Travel Backpack and Hynes Eagle Travel 40L Flight Approved Carry on Backpack

-   **Opening:** Other on the Boundary Supply -- Prima System Modular Travel Backpack; Clamshell on the Hynes Eagle Travel 40L Flight Approved Carry on Backpack.
-   **Luggage passthrough:** Yes on the Boundary Supply -- Prima System Modular Travel Backpack; No on the Hynes Eagle Travel 40L Flight Approved Carry on Backpack.
-   **Sternum strap:** Removable on the Boundary Supply -- Prima System Modular Travel Backpack; Yes on the Hynes Eagle Travel 40L Flight Approved Carry on Backpack.
-   **Laptop sleeve:** 17in on the Boundary Supply -- Prima System Modular Travel Backpack; 15in on the Hynes Eagle Travel 40L Flight Approved Carry on Backpack.

Both have: compression straps, passport pocket, backpack straps, hip belt, built-in organizer, 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. 73 accept both. 101 accept only the Boundary Supply -- Prima System Modular Travel Backpack, and 0 accept only the Hynes Eagle Travel 40L Flight Approved Carry on Backpack.

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

Aer Lingus, Air Asia, Air Baltic, Air Canada, Air China, Air Macau, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Air Wisconsin, AirAsiaX, Alaska Airlines, Allegiant Air, American Airlines, Asiana Airlines, ATA Airlines, Austrian, Avianca , Azerbaijan Airlines, Bahamasair, Bangkok Airways, Belavia, Biman Bangladesh, Blue Air, Brussels Airlines, Bulgaria Air, Cambodia Angkor Air, Cathay Pacific, Cayman Airways, Cebu Pacific, China Airlines, China Eastern, CommutAir, Delta Airlines, Dragonair, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, EVA Air, Fiji Airways, Flair Air, flybe, Garuda Indonesia, Great Lakes Airlines, Hawaiian Airlines, Hong Kong Airlines, Icelandair, InselAir, jetBlue Airways, Jetstar Airways, Jetstar Asia, Juneyao Airlines, Kulula, Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Malaysia Airlines, Mango, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Oman Air, Pakistan International, Porter Airlines, Qantas Airways, Qatar Airways, Republic Airways, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Skywest, Inc., South African Airways, SriLankan Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, Trans States, TUI, Turkish Airlines, Ukraine International, United Airlines, Vietnam Airlines, VIM Airlines (Closed), Virgin Atlantic, Volotea, WestJet, Xiamen.

## Boundary Supply -- Prima System Modular Travel Backpack vs. Hynes Eagle Travel 40L Flight Approved Carry on Backpack: which should you pack?

The **Hynes Eagle Travel 40L Flight Approved Carry on Backpack** carries 18L more than the **Boundary Supply -- Prima System Modular Travel Backpack** (22L vs. 40L), while the **Hynes Eagle Travel 40L Flight Approved Carry on Backpack** is the lighter pack at 1.1kg (vs. 1.4kg). 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 Hynes Eagle Travel 40L Flight Approved Carry on Backpack; if you want to travel lighter, the Hynes Eagle Travel 40L Flight Approved Carry on Backpack is the better call.