---
url: "https://onebag.travel/compare/2rbg4dtslw/aer-travel-pack-4-35l/sbw8wzkeri/peak-design-travel-backpack-30l/"
title: "Aer Travel Pack 4 35L vs Peak Design Travel Backpack 30L"
description: "Aer Travel Pack 4 35L vs Peak Design Travel Backpack 30L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/2rbg4dtslw/aer-travel-pack-4-35l/sbw8wzkeri/peak-design-travel-backpack-30l/"
---
1.  [Home](https://onebag.travel/)
2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Aer Travel Pack 4 35L vs. Peak Design Travel Backpack 30L

# Aer Travel Pack 4 35L vs. Peak Design Travel Backpack 30L

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

## [Aer Travel Pack 4 35L](https://onebag.travel/carryon/2rbg4dtslw/aer-travel-pack-4-35l/)

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

![Front facing view of the Aer Travel Pack 4 35L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990469/carryons/aer-travel-pack-4-35l-2rbg4dtslw.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>35 L</td></tr><tr><td>Weight</td><td>1.8 kg</td></tr><tr><td>Dimensions</td><td>55×34×23 cm</td></tr><tr><td>Airline fit</td><td>68%</td></tr><tr><td>Price</td><td>$260</td></tr></tbody></table>

## Feature by feature

| Aer Travel Pack 4 35L | Feature | Peak Design Travel Backpack 30L |
| --- | --- | --- |
| Storage |
| N | Compression | 1 |
| None | Expanded Capacity | 33L |
| 1 | Opening | 1 |
| top | Passport | top |
| Y | Passthrough | Y |
| Carry |
| Y | Backpack | hideable |
| optional | Hip Belt | optional |
| removable | Sternum Strap | removable |
| Inside |
| 16in | Laptop | 16in |
| 5 | Main Compartments | 7 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>1680D CORDURA® ballistic nylon exterior (bluesign® approved)</td><td>shell: Weatherproof 400D nylon canvas bottom: 900D nylon weatherproof zippers</td></tr></tbody></table>

## [Peak Design Travel Backpack 30L](https://onebag.travel/carryon/sbw8wzkeri/peak-design-travel-backpack-30l/)

by [Peak Design](https://onebag.travel/carryons/?brands=Peak Design)

![Front facing view of the Peak Design Travel Backpack 30L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990423/carryons/peak-design-travel-backpack-30l-sbw8wzkeri.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>1.4 kg</td></tr><tr><td>Dimensions</td><td>53×33×18 cm</td></tr><tr><td>Airline fit</td><td>88%</td></tr><tr><td>Price</td><td>$240</td></tr></tbody></table>

## Key differences between the Aer Travel Pack 4 35L and Peak Design Travel Backpack 30L

-   **Compression straps:** No on the Aer Travel Pack 4 35L; 1 on the Peak Design Travel Backpack 30L.
-   **Backpack straps:** Yes on the Aer Travel Pack 4 35L; Hideable on the Peak Design Travel Backpack 30L.
-   **Main compartments:** 5 on the Aer Travel Pack 4 35L; 7 on the Peak Design Travel Backpack 30L.

Both have: passport pocket, luggage passthrough, hip belt, sternum strap, laptop sleeve, 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. 129 accept both. 0 accept only the Aer Travel Pack 4 35L, and 38 accept only the Peak Design Travel Backpack 30L.

### Only the Peak Design Travel Backpack 30L fits

Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Royal Brunei Airlines, Ryanair, S7, Scoot, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Ukraine International, VIM Airlines (Closed), Volotea, WestJet, Xiamen.

## Aer Travel Pack 4 35L vs. Peak Design Travel Backpack 30L: which should you pack?

The **Aer Travel Pack 4 35L** carries 8L more than the **Peak Design Travel Backpack 30L** (35L vs. 27L), while the **Peak Design Travel Backpack 30L** is the lighter pack at 1.4kg (vs. 1.8kg). For carry-on flexibility, the **Peak Design Travel Backpack 30L** fits 88% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Aer Travel Pack 4 35L; if you want to travel lighter, the Peak Design Travel Backpack 30L is the better call.