---
url: "https://onebag.travel/compare/cfo1f254gp/rei-co-op-trail-pack-25/q54m3y57hp/5-11-skyweight-36l-pack/"
title: "REI Co-op Trail Pack 25 vs 5.11 Skyweight 36L Pack"
description: "REI Co-op Trail Pack 25 vs 5.11 Skyweight 36L Pack: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/cfo1f254gp/rei-co-op-trail-pack-25/q54m3y57hp/5-11-skyweight-36l-pack/"
---
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3.  REI Co-op Trail Pack 25 vs. 5.11 Skyweight 36L Pack

# REI Co-op Trail Pack 25 vs. 5.11 Skyweight 36L Pack

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

## [REI Co-op Trail Pack 25](https://onebag.travel/carryon/cfo1f254gp/rei-co-op-trail-pack-25/)

by [REI Co-op](https://onebag.travel/carryons/?brands=REI Co-op)

![Front facing view of the REI Co-op Trail Pack 25](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601602563/carryons/reicoop_o83w5i.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>25 L</td></tr><tr><td>Weight</td><td>0.8 kg</td></tr><tr><td>Dimensions</td><td>46×33×20 cm</td></tr><tr><td>Airline fit</td><td>94%</td></tr><tr><td>Price</td><td>$100</td></tr></tbody></table>

## Feature by feature

| REI Co-op Trail Pack 25 | Feature | 5.11 Skyweight 36L Pack |
| --- | --- | --- |
| Storage |
| 2 | Compression | 4 |
| None | Expanded Capacity | None |
| 0 | Opening | 1 |
| top | Passport | top |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| Y | Sternum Strap | Y |
| Inside |
| N | Laptop | N |
| 3 | Main Compartments | 4 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| Y | Rain-fly | Y |
| 2, side | Water Bottle Holder | 2, side |
| Y | Water Resistant | N |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>210-denier ripstop nylon</td><td>330D ripstop nylon</td></tr></tbody></table>

## [5.11 Skyweight 36L Pack](https://onebag.travel/carryon/q54m3y57hp/5-11-skyweight-36l-pack/)

by [5.11](https://onebag.travel/carryons/?brands=5.11)

![Front facing view of the 5.11 Skyweight 36L Pack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990315/carryons/5-11-skyweight-36l-pack-q54m3y57hp.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>1.1 kg</td></tr><tr><td>Dimensions</td><td>56×33×22 cm</td></tr><tr><td>Airline fit</td><td>47%</td></tr><tr><td>Price</td><td>$200</td></tr></tbody></table>

## Key differences between the REI Co-op Trail Pack 25 and 5.11 Skyweight 36L Pack

-   **Compression straps:** 2 on the REI Co-op Trail Pack 25; 4 on the 5.11 Skyweight 36L Pack.
-   **Opening:** Other on the REI Co-op Trail Pack 25; Clamshell on the 5.11 Skyweight 36L Pack.
-   **Main compartments:** 3 on the REI Co-op Trail Pack 25; 4 on the 5.11 Skyweight 36L Pack.
-   **Water resistant:** Yes on the REI Co-op Trail Pack 25; No on the 5.11 Skyweight 36L Pack.

Both have: passport pocket, backpack straps, hip belt, sternum strap, rain cover, water bottle pockets.

## 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. 89 accept only the REI Co-op Trail Pack 25, and 0 accept only the 5.11 Skyweight 36L Pack.

### Only the REI Co-op Trail Pack 25 fits

Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Baltic, Air Canada, Air Caraibes, Air China, Air France, Air India, Air Malta, Air Mauritius, Air Serbia, Air Seychelles, All Nipon Airways, American Eagle, ANA, Asiana Airlines, ATA Airlines, Austrian, Azerbaijan Airlines, Belavia, Blue Air, Boliviana de Aviacion, Brussels Airlines, Bulgaria Air, China Eastern, Czech Airlines, easyJet, Emirates Airlines, Enter Air, Ethiopian Airlines, Etihad Airways, Eurowings, Fiji Airways, Flair Air, flybe, Gol Linhas Aereas, Iberia, Icelandair, Indigo, InselAir, Interjet, Iran Air, Japan Airlines, Jet Airways, Juneyao Airlines, Kenya Airways, KLM, LATAM , Liat Airlines, LOT Polish, Lufthansa, Luxair, Mahan Air, Meridiana Fly, Mesa Airlines, Nordwind Airlines, Norwegian, Oman Air, Pakistan International, Peach, Porter Airlines, Qatar Airways, Ravn Alaska, Regional Express, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, SAS Scandinavian, Scoot, Shandong Airlines, Shenzhen Airlines, Sky Airlines, Sun Express, Swiss Int'l Air Lines, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), Tiger Airways, TUI, Turkish Airlines, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, WestJet, Xiamen.

## REI Co-op Trail Pack 25 vs. 5.11 Skyweight 36L Pack: which should you pack?

The **5.11 Skyweight 36L Pack** carries 11L more than the **REI Co-op Trail Pack 25** (25L vs. 36L), while the **REI Co-op Trail Pack 25** is the lighter pack at 0.8kg (vs. 1.1kg). For carry-on flexibility, the **REI Co-op Trail Pack 25** fits 94% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the 5.11 Skyweight 36L Pack; if you want to travel lighter, the REI Co-op Trail Pack 25 is the better call.