KO Stool by TOOU

KO Stool by TOOU is an object that is almost undefined in its use – therefore completely free to suggest different purposes reinterpreted from time to time.

Designed by Simon Viola.

Perfect as a lightweight and elegant stool or as a side table.

Like an hourglass, KO can be overturned reinventing the design, while the joint ring in matching or contrasting colours allows for different colour and style combinations.

Made of white or black polypropylene, lightweight yet extremely sturdy, it can be used both indoor and outdoor in several ways.

KO is stocked in available colours

Warranty: 2 years.


85% Polypropylene / 15% Fiberglass
UV resistant shell and frame

Black shell / Black ring
Black shell / Mustard ring
White shell / White ring
White shell / Mustard ring

** Indent colours available upon request

300mmW x 300mmD x 440mmH



Lead time:Ready to ship
Delivery: More info on delivery
Returns:Read our full returns policy


TOOU is more than a furniture manufacturer.

It is the realization of a utopia: to create authentic but accessible and versatile designs of everyday objects.
Conceived for both interior and exterior furnishing with a contemporary aesthetic that fits every living style, TOOU furniture pieces are designed and built for each one of us.

When creating new furniture, TOOU aim for durability in design and aesthetics, therefore products are never superfluous in accessories nor designed for ephemeral trends, but universal and versatile. TOOU strives to create innovative and fresh products in a process of user-centered design that puts people at the heart of things.

TOOU strives to create objects through a production that puts people at the heart of things.

TOOU materialize projects in which they can utilize modern technology while keeping the end user’s needs and perspective in mind. This optimized process of production results in comfortable, safe, and beautiful products that are as aesthetically pleasing as they are practical.

Their primary aim is that every TOOU product is desirable, affordable, and customizable, with a range of materials, shapes, and colors that can transform a mass-produced product into a highly personal one.

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About the designer

Simon Viola

After a rigorous training in industrial design in Milan and through his collaboration during various architectural and design studies, he began to gain experience in Switzerland and abroad.


In 2011, he founded the Simone Viola Design Studio, focusing on industrial projects for furniture and accessories.


His philosophy leans toward research on the materials and technical aspects related to the development of the project, conceptually guided by historical and artistic references.


This approach produces the most natural connection to contemporary design, where the object is not the expression of a trend, but a long-lasting fusion of form and the intended use.


Soft, natural elegant shapes and an elevated attention to details characterises his work and a continuous optimisation of the development phase allows the realisation of high quality and generously accommodating products.

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