---
url: "https://onebag.travel/compare/95awa7o9tp/patagonia-chacabuco-backpack-30l/brsq4qv334/stm-trilogy/"
title: "Patagonia Chacabuco Backpack 30L vs STM Trilogy"
description: "Patagonia Chacabuco Backpack 30L vs STM Trilogy: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/95awa7o9tp/patagonia-chacabuco-backpack-30l/brsq4qv334/stm-trilogy/"
---
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3.  Patagonia Chacabuco Backpack 30L vs. STM Trilogy

# Patagonia Chacabuco Backpack 30L vs. STM Trilogy

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

## [Patagonia Chacabuco Backpack 30L](https://onebag.travel/carryon/95awa7o9tp/patagonia-chacabuco-backpack-30l/)

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

![Front facing view of the Patagonia Chacabuco Backpack 30L](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1632813582/carryons/Patagonia_Chacabuco_Backpack_30L_bej8o1.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>30 L</td></tr><tr><td>Weight</td><td>0.7 kg</td></tr><tr><td>Dimensions</td><td>49×31×22 cm</td></tr><tr><td>Airline fit</td><td>72%</td></tr><tr><td>Price</td><td>$99</td></tr></tbody></table>

## Feature by feature

| Patagonia Chacabuco Backpack 30L | Feature | STM Trilogy |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 4 | Opening | 4 |
| N | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | N |
| Y | Sternum Strap | N |
| Inside |
| 15in | Laptop | 15in |
| 3 | Main Compartments | 1 |
| Y | Organizer | Y |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 2 | Water Bottle Holder | 2 |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>630-denier 100% nylon, 200-denier 100% recycled polyester</td><td>100% polyester</td></tr></tbody></table>

## [STM Trilogy](https://onebag.travel/carryon/brsq4qv334/stm-trilogy/)

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

![Front facing view of the STM Trilogy](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1634095801/carryons/STM_Trilogy_lukffj.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>24 L</td></tr><tr><td>Weight</td><td>0.64 kg</td></tr><tr><td>Dimensions</td><td>46×30×16 cm</td></tr><tr><td>Airline fit</td><td>94%</td></tr><tr><td>Price</td><td>$80</td></tr></tbody></table>

## Key differences between the Patagonia Chacabuco Backpack 30L and STM Trilogy

-   **Sternum strap:** Yes on the Patagonia Chacabuco Backpack 30L; No on the STM Trilogy.
-   **Main compartments:** 3 on the Patagonia Chacabuco Backpack 30L; 1 on the STM Trilogy.

Both have: backpack straps, 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. 137 accept both. 0 accept only the Patagonia Chacabuco Backpack 30L, and 41 accept only the STM Trilogy.

### Only the STM Trilogy fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, American Eagle, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, easyJet, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Liat Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Ravn Alaska, Regional Express, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, Xiamen.

## Patagonia Chacabuco Backpack 30L vs. STM Trilogy: which should you pack?

The **Patagonia Chacabuco Backpack 30L** carries 6L more than the **STM Trilogy** (30L vs. 24L), while the **STM Trilogy** is the lighter pack at 0.64kg (vs. 0.7kg). For carry-on flexibility, the **STM Trilogy** fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Patagonia Chacabuco Backpack 30L; if you want to travel lighter, the STM Trilogy is the better call.