---
url: "https://onebag.travel/compare/4qxz8xxgq5/mammut-lithium-30/985cttn4v5/ks-ultralight-tao/"
title: "Mammut Lithium 30 vs KS Ultralight Tao - One Bag Travel"
description: "Mammut Lithium 30 vs KS Ultralight Tao: capacity, weight, dimensions and how many airlines accept each as a carry-on, side by side."
source: "https://onebag.travel/compare/4qxz8xxgq5/mammut-lithium-30/985cttn4v5/ks-ultralight-tao/"
---
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3.  Mammut Lithium 30 vs. KS Ultralight Tao

# Mammut Lithium 30 vs. KS Ultralight Tao

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

## [Mammut Lithium 30](https://onebag.travel/carryon/4qxz8xxgq5/mammut-lithium-30/)

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

![Front facing view of the Mammut Lithium 30](https://res.cloudinary.com/obt/image/upload/c_fill,w_400/v1788990380/carryons/mammut-lithium-30-4qxz8xxgq5.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>0.9 kg</td></tr><tr><td>Dimensions</td><td>54×26×24 cm</td></tr><tr><td>Airline fit</td><td>40%</td></tr><tr><td>Price</td><td>$160</td></tr></tbody></table>

## Feature by feature

| Mammut Lithium 30 | Feature | KS Ultralight Tao |
| --- | --- | --- |
| Storage |
| 5 | Compression | N |
| None | Expanded Capacity | None |
| 0 | Opening | 0 |
| top | Passport | top |
| N | Passthrough | N |
| Carry |
| Y | Backpack | Y |
| Y | Hip Belt | removable |
| removable | Sternum Strap | removable |
| Inside |
| N | Laptop | N |
| 2 | Main Compartments | 2 |
| N | Organizer | N |
| Outside |
| × | Hard Shell | × |
| Y | Rain-fly | N |
| 2, side | Water Bottle Holder | N |
| Y | Water Resistant | Y |

<table class="cmp-material"><tbody><tr><td colspan="2">Material</td></tr><tr><td>100% Polyamide, Bluesign, PFC free, recycled</td><td>X-pac VX 07YKK "waterproof zip"</td></tr></tbody></table>

## [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>

## Key differences between the Mammut Lithium 30 and KS Ultralight Tao

-   **Compression straps:** 5 on the Mammut Lithium 30; No on the KS Ultralight Tao.
-   **Hip belt:** Yes on the Mammut Lithium 30; Removable on the KS Ultralight Tao.
-   **Rain cover:** Yes on the Mammut Lithium 30; No on the KS Ultralight Tao.
-   **Water bottle pockets:** 2, side on the Mammut Lithium 30; No on the KS Ultralight Tao.

Both have: passport pocket, backpack straps, 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. 73 accept only the Mammut Lithium 30, and 0 accept only the KS Ultralight Tao.

### Only the Mammut Lithium 30 fits

Adria Airways, Aegean Airlines, Aer Lingus, Aeroflot, Aerolineas Argentinas, Aeromexico, Air Astana, Air Caraibes, Air Europa, Air France, Air India, Air Koryo, Air Mauritius, Air New Zealand, Air Nostrum, Air Tahiti Nui, All Nipon Airways, ANA, Atlas Global, Azul Linhas, Boliviana de Aviacion, British Airways, Caribbean Airlines, China Southern, Conviasa, Copa Airlines, Croatia Air, Cubana de Aviacion, Czech Airlines, EL AL, Finnair, Frontier Airlines, Gol Linhas Aereas, Great Lakes Airlines, Hainan Airlines, Iberia, Indigo, Interjet, Iran Air, Iran Aseman Air, Island Air, Japan Airlines, Jet Airways, Jet2, Kenya Airways, KLM, Korean Air, Kuwait Air, LATAM , Middle East Airlines, Monarch Airlines, Onur Air, Peach, PenAir, Philippine Airlines, Royal Air Morocco, Saudi Arabian Airlines, Sichuan Airlines, SilkAir, Silver Airways, Singapore Airlines, Sky Airlines, Southwest Airlines, SpiceJet, Spirit Airlines, Sun Country, TAAG Angola, TAM Airlines, Thai Airways, Travel Service Airlines, Ural Airlines, Uzbekistan Air, WOW Airlines.

## Mammut Lithium 30 vs. KS Ultralight Tao: which should you pack?

The **KS Ultralight Tao** carries 5L more than the **Mammut Lithium 30** (30L vs. 35L), while the **KS Ultralight Tao** is the lighter pack at 0.3kg (vs. 0.9kg). For carry-on flexibility, the **Mammut Lithium 30** fits 40% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the KS Ultralight Tao; if you want to travel lighter, the KS Ultralight Tao is the better call.