---
url: "https://onebag.travel/compare/aldchn064h/patagonia-ascensionist-pack-55l/g8vk4elmur/exped-mountain-pro-40/"
title: "Patagonia Ascensionist Pack 55L vs Exped Mountain Pro 40"
description: "Patagonia Ascensionist Pack 55L vs Exped Mountain Pro 40: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/aldchn064h/patagonia-ascensionist-pack-55l/g8vk4elmur/exped-mountain-pro-40/"
---
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3.  Patagonia Ascensionist Pack 55L vs. Exped Mountain Pro 40

# Patagonia Ascensionist Pack 55L vs. Exped Mountain Pro 40

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

## [Patagonia Ascensionist Pack 55L](https://onebag.travel/carryon/aldchn064h/patagonia-ascensionist-pack-55l/)

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

![Front facing view of the Patagonia Ascensionist Pack 55L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1633507455/carryons/Ascensionist_Pack_55_fk9adg.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>55 L</td></tr><tr><td>Weight</td><td>1.28 kg</td></tr><tr><td>Dimensions</td><td>67×32×20 cm</td></tr><tr><td>Airline fit</td><td>1%</td></tr><tr><td>Price</td><td>$219</td></tr></tbody></table>

## Feature by feature

| Patagonia Ascensionist Pack 55L | Feature | Exped Mountain Pro 40 |
| --- | --- | --- |
| Storage |
| removable | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 3 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | Y |
| Inside |
| N | Laptop | N |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| N | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>420-denier 100% recycled nylon ripstop, 0-denier 100% nylon ripstop</td><td>420 D Oxford nylon, PU coated, 3'000 mm water column</td></tr></tbody></table>

## [Exped Mountain Pro 40](https://onebag.travel/carryon/g8vk4elmur/exped-mountain-pro-40/)

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

![Front facing view of the Exped Mountain Pro 40](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1623838719/carryons/Exped_Mountain_Pro_40_vwnu8n.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>42 L</td></tr><tr><td>Weight</td><td>1.39 kg</td></tr><tr><td>Dimensions</td><td>62×32×26 cm</td></tr><tr><td>Airline fit</td><td>2%</td></tr><tr><td>Price</td><td>$190</td></tr></tbody></table>

## Key differences between the Patagonia Ascensionist Pack 55L and Exped Mountain Pro 40

-   **Compression straps:** Removable on the Patagonia Ascensionist Pack 55L; No on the Exped Mountain Pro 40.
-   **Opening:** Other on the Patagonia Ascensionist Pack 55L; Top flap on the Exped Mountain Pro 40.
-   **Sternum strap:** Removable on the Patagonia Ascensionist Pack 55L; Yes on the Exped Mountain Pro 40.

Both have: backpack straps, hip belt, water resistant.

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

We checked both bags against the carry-on size limits of 189 airlines. 2 accept both. 0 accept only the Patagonia Ascensionist Pack 55L, and 1 accept only the Exped Mountain Pro 40.

### Only the Exped Mountain Pro 40 fits

Island Air.

## Patagonia Ascensionist Pack 55L vs. Exped Mountain Pro 40: which should you pack?

The **Patagonia Ascensionist Pack 55L** carries 13L more than the **Exped Mountain Pro 40** (55L vs. 42L), while the **Patagonia Ascensionist Pack 55L** is the lighter pack at 1.28kg (vs. 1.39kg). For carry-on flexibility, the **Exped Mountain Pro 40** fits 2% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Patagonia Ascensionist Pack 55L; if you want to travel lighter, the Patagonia Ascensionist Pack 55L is the better call.