---
url: "https://onebag.travel/compare/10tqh8wtds/gossamer-gear-mariposa/xkzrrigkky/peak-design-outdoor-backpack-45l/"
title: "Gossamer Gear Mariposa vs Peak Design Outdoor Backpack 45L"
description: "Gossamer Gear Mariposa vs Peak Design Outdoor Backpack 45L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/10tqh8wtds/gossamer-gear-mariposa/xkzrrigkky/peak-design-outdoor-backpack-45l/"
---
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2.  [Carry-On Travel Backpacks](https://onebag.travel/carryons/)
3.  Gossamer Gear Mariposa vs. Peak Design Outdoor Backpack 45L

# Gossamer Gear Mariposa vs. Peak Design Outdoor Backpack 45L

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

## [Gossamer Gear Mariposa](https://onebag.travel/carryon/10tqh8wtds/gossamer-gear-mariposa/)

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

![Front facing view of the Gossamer Gear Mariposa](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990365/carryons/gossamer-gear-mariposa-10tqh8wtds.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>36 L</td></tr><tr><td>Weight</td><td>0.9 kg</td></tr><tr><td>Dimensions</td><td>56×28×14 cm</td></tr><tr><td>Airline fit</td><td>47%</td></tr><tr><td>Price</td><td>$315</td></tr></tbody></table>

## Feature by feature

| Gossamer Gear Mariposa | Feature | Peak Design Outdoor Backpack 45L |
| --- | --- | --- |
| Storage |
| 2 | Compression | N |
| None | Expanded Capacity | 45L |
| 0 | Opening | 1 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| N | Laptop | 16in |
| 1 | Main Compartments | 1 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2, side | Water Bottle Holder | 4, side |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>100D &amp; 210D Recycled Robic Nylon</td><td>Ultralight Terra Shell™ 210D ripstop</td></tr></tbody></table>

## [Peak Design Outdoor Backpack 45L](https://onebag.travel/carryon/xkzrrigkky/peak-design-outdoor-backpack-45l/)

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

![Front facing view of the Peak Design Outdoor Backpack 45L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990422/carryons/peak-design-outdoor-backpack-45l-xkzrrigkky.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>1.6 kg</td></tr><tr><td>Dimensions</td><td>56×31×17 cm</td></tr><tr><td>Airline fit</td><td>47%</td></tr><tr><td>Price</td><td>$330</td></tr></tbody></table>

## Key differences between the Gossamer Gear Mariposa and Peak Design Outdoor Backpack 45L

-   **Compression straps:** 2 on the Gossamer Gear Mariposa; No on the Peak Design Outdoor Backpack 45L.
-   **Opening:** Other on the Gossamer Gear Mariposa; Clamshell on the Peak Design Outdoor Backpack 45L.
-   **Laptop sleeve:** No on the Gossamer Gear Mariposa; 16in on the Peak Design Outdoor Backpack 45L.
-   **Water bottle pockets:** 2, side on the Gossamer Gear Mariposa; 4, side on the Peak Design Outdoor Backpack 45L.

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

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

We checked both bags against the carry-on size limits of 189 airlines. 88 accept both. 1 accept only the Gossamer Gear Mariposa, and 0 accept only the Peak Design Outdoor Backpack 45L.

### Only the Gossamer Gear Mariposa fits

Great Lakes Airlines.

## Gossamer Gear Mariposa vs. Peak Design Outdoor Backpack 45L: which should you pack?

The **Gossamer Gear Mariposa** carries 1L more than the **Peak Design Outdoor Backpack 45L** (36L vs. 35L), while the **Gossamer Gear Mariposa** is the lighter pack at 0.9kg (vs. 1.6kg). For carry-on flexibility, the **Gossamer Gear Mariposa** fits 47% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Gossamer Gear Mariposa; if you want to travel lighter, the Gossamer Gear Mariposa is the better call.