---
url: "https://onebag.travel/compare/985cttn4v5/ks-ultralight-tao/aldchn064h/patagonia-ascensionist-pack-55l/"
title: "KS Ultralight Tao vs Patagonia Ascensionist Pack 55L"
description: "KS Ultralight Tao vs Patagonia Ascensionist Pack 55L: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/985cttn4v5/ks-ultralight-tao/aldchn064h/patagonia-ascensionist-pack-55l/"
---
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3.  KS Ultralight Tao vs. Patagonia Ascensionist Pack 55L

# KS Ultralight Tao vs. Patagonia Ascensionist Pack 55L

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

## [KS Ultralight Tao](https://onebag.travel/carryon/985cttn4v5/ks-ultralight-tao/)

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

![Front facing view of the KS Ultralight Tao](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1601079762/carryons/tao_klvueq.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>0.3 kg</td></tr><tr><td>Dimensions</td><td>71×30×18 cm</td></tr><tr><td>Airline fit</td><td>1%</td></tr><tr><td>Price</td><td>$150</td></tr></tbody></table>

## Feature by feature

| KS Ultralight Tao | Feature | Patagonia Ascensionist Pack 55L |
| --- | --- | --- |
| Storage |
| N | Compression | removable |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top | Passport | N |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| removable | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| N | Laptop | N |
| 2 | 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>X-pac VX 07YKK "waterproof zip"</td><td>420-denier 100% recycled nylon ripstop, 0-denier 100% nylon ripstop</td></tr></tbody></table>

## [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>

## Key differences between the KS Ultralight Tao and Patagonia Ascensionist Pack 55L

-   **Compression straps:** No on the KS Ultralight Tao; Removable on the Patagonia Ascensionist Pack 55L.
-   **Passport pocket:** Top on the KS Ultralight Tao; No on the Patagonia Ascensionist Pack 55L.
-   **Main compartments:** 2 on the KS Ultralight Tao; 1 on the Patagonia Ascensionist Pack 55L.

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. 2 accept both. Every airline that takes one takes the other.

## KS Ultralight Tao vs. Patagonia Ascensionist Pack 55L: which should you pack?

The **Patagonia Ascensionist Pack 55L** carries 20L more than the **KS Ultralight Tao** (35L vs. 55L), while the **KS Ultralight Tao** is the lighter pack at 0.3kg (vs. 1.28kg). For carry-on flexibility, the **KS Ultralight Tao** fits 1% 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 KS Ultralight Tao is the better call.