---
url: "https://onebag.travel/compare/010ljxisxd/mountainsmith-divide-evo-daypack/3m1t3p4dt2/rei-co-op-flash-pack-22/"
title: "Mountainsmith Divide EVO Daypack vs REI Co-op Flash Pack 22"
description: "Mountainsmith Divide EVO Daypack vs REI Co-op Flash Pack 22: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/010ljxisxd/mountainsmith-divide-evo-daypack/3m1t3p4dt2/rei-co-op-flash-pack-22/"
---
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3.  Mountainsmith Divide EVO Daypack vs. REI Co-op Flash Pack 22

# Mountainsmith Divide EVO Daypack vs. REI Co-op Flash Pack 22

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

## [Mountainsmith Divide EVO Daypack](https://onebag.travel/carryon/010ljxisxd/mountainsmith-divide-evo-daypack/)

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

![Front facing view of the Mountainsmith Divide EVO Daypack](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990386/carryons/mountainsmith-divide-evo-daypack-010ljxisxd.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>16 L</td></tr><tr><td>Weight</td><td>0.7 kg</td></tr><tr><td>Dimensions</td><td>44×29×15 cm</td></tr><tr><td>Airline fit</td><td>95%</td></tr><tr><td>Price</td><td>$130</td></tr></tbody></table>

## Feature by feature

| Mountainsmith Divide EVO Daypack | Feature | REI Co-op Flash Pack 22 |
| --- | --- | --- |
| Storage |
| N | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 3 |
| front | Passport | top |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| N | Hip Belt | Y |
| removable | Sternum Strap | removable |
| Inside |
| 15in | Laptop | 15in |
| 3 | Main Compartments | 3 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| N | Rain-fly | N |
| 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>500d Nylon Cordura</td><td>Recycled nylon (bluesign®;-approved)</td></tr></tbody></table>

## [REI Co-op Flash Pack 22](https://onebag.travel/carryon/3m1t3p4dt2/rei-co-op-flash-pack-22/)

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

![Front facing view of the REI Co-op Flash Pack 22](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601122690/carryons/reiflash_qzkyi0.webp)

<table class="table table-sm cmp-spec mt-2"><tbody><tr><td>Capacity</td><td>22 L</td></tr><tr><td>Weight</td><td>0.4 kg</td></tr><tr><td>Dimensions</td><td>48×28×20 cm</td></tr><tr><td>Airline fit</td><td>93%</td></tr><tr><td>Price</td><td>$60</td></tr></tbody></table>

## Key differences between the Mountainsmith Divide EVO Daypack and REI Co-op Flash Pack 22

-   **Opening:** Other on the Mountainsmith Divide EVO Daypack; Top flap on the REI Co-op Flash Pack 22.
-   **Passport pocket:** Front on the Mountainsmith Divide EVO Daypack; Top on the REI Co-op Flash Pack 22.
-   **Hip belt:** No on the Mountainsmith Divide EVO Daypack; Yes on the REI Co-op Flash Pack 22.
-   **Water resistant:** Yes on the Mountainsmith Divide EVO Daypack; No on the REI Co-op Flash Pack 22.

Both have: backpack straps, sternum strap, laptop sleeve, 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. 175 accept both. 5 accept only the Mountainsmith Divide EVO Daypack, and 1 accept only the REI Co-op Flash Pack 22.

### Only the Mountainsmith Divide EVO Daypack fits

Air Tahiti, American Eagle, easyJet, Gulf Air, Ravn Alaska.

### Only the REI Co-op Flash Pack 22 fits

Great Lakes Airlines.

## Mountainsmith Divide EVO Daypack vs. REI Co-op Flash Pack 22: which should you pack?

The **REI Co-op Flash Pack 22** carries 6L more than the **Mountainsmith Divide EVO Daypack** (16L vs. 22L), while the **REI Co-op Flash Pack 22** is the lighter pack at 0.4kg (vs. 0.7kg). For carry-on flexibility, the **Mountainsmith Divide EVO Daypack** fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the REI Co-op Flash Pack 22; if you want to travel lighter, the REI Co-op Flash Pack 22 is the better call.