Side view of PURE design swivel chair with blue upholstered backrest, blue seat cover, white T-armrests and plastic parts in white, (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k
An innovation that has never been seen before

PUREis3

Ready. Sit. Go!

PURE sets all-new standards for active, intuitive and flexible sitting. It is the revolutionary alternative to the traditional office chair. PURE replaces conventional mechanisms with innovative materials. No more adjustments – the intelligent Smart Spring technology ensures that the PURE adjusts perfectly to every user without any effort on their part.
Take a seat: Ready. Sit. Go!
This renowned prize is awarded by the German Design Council, Germany's leading design authority. The award focuses on products with pioneering design from Germany and other countries.
Quality and sustainability play a major role at Interstuhl. We are convinced of the great durability of our products. That is why we offer a 10-year warranty for all Interstuhl products and all spare parts – including gas springs and mechanisms.
The Blue Angel is the most widely known certification mark in the world. For 40 years now, the Environmental Label Jury, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, the German Federal Environmental Agency and RAL gGmbH have been distinguishing products and services that are particularly environmentally friendly.
The
FAA2
Side view of PURE ergonomic office chair with black mesh backrest, black seat cover, black T-armrests and plastic parts in black, (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k
An innovation that has never been seen before

PUREis3

Ready. Sit. Go!

PURE sets all-new standards for active, intuitive and flexible sitting. It is the revolutionary alternative to the traditional office chair. PURE replaces conventional mechanisms with innovative materials. No more adjustments – the intelligent Smart Spring technology ensures that the PURE adjusts perfectly to every user without any effort on their part.
Take a seat: Ready. Sit. Go!
This renowned prize is awarded by the German Design Council, Germany's leading design authority. The award focuses on products with pioneering design from Germany and other countries.
Quality and sustainability play a major role at Interstuhl. We are convinced of the great durability of our products. That is why we offer a 10-year warranty for all Interstuhl products and all spare parts – including gas springs and mechanisms.
The Blue Angel is the most widely known certification mark in the world. For 40 years now, the Environmental Label Jury, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, the German Federal Environmental Agency and RAL gGmbH have been distinguishing products and services that are particularly environmentally friendly.
The
ER01
Side view of PURE ergonomic desk chair with red upholstered backrest, red seat cover, black T-armrests and plastic parts in black, (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k
An innovation that has never been seen before

PUREis3

Ready. Sit. Go!

PURE sets all-new standards for active, intuitive and flexible sitting. It is the revolutionary alternative to the traditional office chair. PURE replaces conventional mechanisms with innovative materials. No more adjustments – the intelligent Smart Spring technology ensures that the PURE adjusts perfectly to every user without any effort on their part.
Take a seat: Ready. Sit. Go!
This renowned prize is awarded by the German Design Council, Germany's leading design authority. The award focuses on products with pioneering design from Germany and other countries.
Quality and sustainability play a major role at Interstuhl. We are convinced of the great durability of our products. That is why we offer a 10-year warranty for all Interstuhl products and all spare parts – including gas springs and mechanisms.
The Blue Angel is the most widely known certification mark in the world. For 40 years now, the Environmental Label Jury, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, the German Federal Environmental Agency and RAL gGmbH have been distinguishing products and services that are particularly environmentally friendly.
The
FA13
Side view of PURE design desk chair with white mesh backrest, yellow seat cover, white T-armrests and plastic parts in white, (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k
An innovation that has never been seen before

PUREis3

Ready. Sit. Go!

PURE sets all-new standards for active, intuitive and flexible sitting. It is the revolutionary alternative to the traditional office chair. PURE replaces conventional mechanisms with innovative materials. No more adjustments – the intelligent Smart Spring technology ensures that the PURE adjusts perfectly to every user without any effort on their part.
Take a seat: Ready. Sit. Go!
This renowned prize is awarded by the German Design Council, Germany's leading design authority. The award focuses on products with pioneering design from Germany and other countries.
Quality and sustainability play a major role at Interstuhl. We are convinced of the great durability of our products. That is why we offer a 10-year warranty for all Interstuhl products and all spare parts – including gas springs and mechanisms.
The Blue Angel is the most widely known certification mark in the world. For 40 years now, the Environmental Label Jury, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, the German Federal Environmental Agency and RAL gGmbH have been distinguishing products and services that are particularly environmentally friendly.
The
5811
A video showing the PURE ergonomic desk chair in everyday use in the office. Optimal active sitting habits and the movement and dynamics of the swivel chair from all directions are presented. The Smart Spring technology is illustrated using a glass figure on the PURE, and some informative details. Detailed information about the health-promoting aspect of the PURE is also provided | by Andreas Krob & Joachim Brüske, b4k
Young man, sitting on the PURE and using the unique opening in the upper backrest. The PURE ergonomic office chair is pictured from a side view with blue mesh backrest, blue seat cover, white arm pads, plastic parts and white column. Further information is available via the information button on the bottom right | by Andreas Krob & Joachim Brüske, b4k
View of the PURE design office chair from below, with a focus on the underside of the padded seat with seat height adjustment mechanism. The seat cover is turquoise and the T-armrests and plastic parts are white. The mechanism is black. Further information is available via the information button on the bottom right | by Andreas Krob & Joachim Brüske, b4k
Office space with PURE design office chairs at the desks. The PURE chairs are upholstered, mesh-covered and have blue, white and black backrest and seat covers. The S4.0 sensor technology is being used on a screen | by Andreas Krob & Joachim Brüske, b4k

Why the new range of office chairs is so special

Experience the Highlights of the PUREis3

With the PURE, sitting is freedom. It not only allows movement in all directions, but also ensures that the sitter is constantly in motion. Forget everything you've ever known about chairs: PURE guarantees a sitting experience like no other – for the working world of tomorrow that is already part of our lives today.

Click on the leftbelow to experience the highlights of the PURE!

The PUREis3 office chair

At a glance

  • Outstanding mobility
  • Smart Spring technology
  • Intuitive operation
  • For anyone looking for flexible solutions
  • A mesh or upholstered backrest in either white or black.
  • Modern, clean-cut, functional
  • Smart Seat
  • Slim, fixed T-armrests and functional 4D T-armrests
Side view of PURE design swivel chair with blue upholstered backrest, blue seat cover, white T-armrests and plastic parts in white, (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k

The office chair in practice

With the PUREis3, sitting is freedom

Forget everything you've ever known about chairs: PURE guarantees a sitting experience like no other – for the working world of tomorrow that is already part of our lives today.

Go to the Interstuhl Splaces for planning data and ideas, zoning examples and further inspiration

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Stylish PURE office chair in various colour versions in a modern meeting room | by Andreas Krob & Joachim Brüske, b4k. A tag cloud on the bottom left specifies the Interstuhl work areas in which the chairs can be used: Welcome, Meet, Work, Relax, Lead and Learn. The work areas for the PURE - Meet, Work, Home and Learn - are highlighted in colour | by Andreas Krob & Joachim Brüske, b4k
You can find more products in global application scenarios in our references
Discover our world of colours:

PUREis3

An overview of the collection

 
 
Quality and sustainability play a major role at Interstuhl. We are convinced of the great durability of our products. That is why we offer a 10-year warranty for all Interstuhl products and all spare parts – including gas springs and mechanisms.
The 'Tested for harmful substances' certification is awarded by TÜV Rhein-land and confirms that our products are tested and regularly monitored to ensure they contain only harmless levels of emissions and hazardous sub-stances. The basis for testing are the strict requirements of the emissions guidelines for upholstered furniture (2 PfG S 0121/03.13).
GS stands for
Side view of PURE PU113 design office chair with blue upholstered backrest, blue seat cover, white T-armrests and plastic parts in white (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k

PU113

Swivel chair, upholstered back
More details
Side view of PURE (PU213) design swivel chair with blue mesh backrest, blue seat cover, white T-armrests and plastic parts in white, (base, column, among others) with Smart Spring technology | by Andreas Krob & Joachim Brüske, b4k

PU213

Swivel chair, mesh covered back
More details

PUREis3

Health

Long periods of static sitting can be hugely detrimental to your health. Research, however, – studies conducted by the Fraunhofer IAO and the University of Tübingen in particular – suggests that just two hours of moderate physical activity per day are enough to offset the negative effects of a sedentary lifestyle. For many years, Interstuhl has collaborated with the Fraunhofer IAO to turn scientific findings into practical solutions.

Three factors with health benefits
PURE effectively promotes the health of the user in three ways:

Activation - PURE ensures that sitting is never static. Frequent posture changes keep muscles active, and legs, hips and spine are mobilised too.

Freedom - PURE guarantees that the user is never forced into an uncomfortable posture. This prevents blockages in the blood flow and encourages circulation. At the same time, PURE does not hinder the user when they have the urge to move.

Comfort - PURE guarantees constant and firm support in all movements. And because the ergonomics of a chair can only work properly if it is correctly adjusted, PUREis3 does this for you – completely automatically.

It is not the chair that promotes health but the movement it provides. PURE does everything to ensure that the user is relieved of strain and stays active.

Fraunhofer IAO      Laboratory for Movement Biomechanics
Video showing the three factors promoting the users' own health and ergonomics by means of a person on the PURE desk chair.

Pureis3

Complete mobility

The amount of mobility possible with the PURE was researched in a biomechanical study conducted by the ETH University of Science and Technology in Zurich. The study showed that PURE offers new levels of material flexibility in the upper backrest of up to 22 degrees to each side, an opening angle of up to 38 degrees in the backrest, and a lateral range of movement of up to 26 degrees on the seat. The Smart Seat can also follow forward movements of up to 12 degrees.

Innovative

The Smart Spring technology

The core component – the "Smart Spring" – is made using a special polyamide/glass fibre compound. It enables the PURE to dynamically adjust to the user's body, weight and movement. The Smart Spring not only defines the visual appearance of the PURE; it also supports the whole chair and allows for impressive movement radii – including in directions that are impossible on other chairs. With no further need for adjustment, this enables true three-dimensional sitting.
A person in motion on the PURE ergonomic office chair with black mesh backrest, black seat cover, white T-armrests and plastic parts in white, (base, column, among others)
Stylish PURE office chair with close-ups of the mesh, upholstery and plastic parts | by Andreas Krob & Joachim Brüske, b4k

MATERIALS AND COLOURS

HIGH QUALITY AND VARIETY

PURE fits perfectly into any environment. Its clean-cut design and the large choice of colours and materials leave you free to customise your chair. The collection offers four swivel chair models: a mesh or upholstered backrest in either white or black. A variety of materials and colours are available to choose from. The Smart Spring, chair column and optional armrests are available in either all-white or all-black for all models.
Discover our world of colours:
Black and white images of the PURE designers, Andreas Krob and Joachim Brüske. Dressed in shirts and jackets, they are looking into the camera

The PUREis3 designer

Andreas Krob & Joachim Brüske, b4k

The PURE concept is based on the requirements of the chair's user in their daily life at work. But what makes a good office chair nowadays? It should be intuitive to use, adapt to its user and enable active, dynamic (i.e. healthier) sitting. Working on this basis, the Swiss design agency b4K set to work to devise a PURE that had this function and purpose. Together with engineer Joachim Brüske, b4K founder Andreas Krob collaborated with Interstuhl to develop the new, innovative Smart Spring technology of the PURE with its core component: the curved Smart Spring on the backrest of the chair.
This renowned prize is awarded by the German Design Council, Germany's leading design authority. The award focuses on products with pioneering design from Germany and other countries.
PURE design swivel chair highlighting the contours of the office chair with dynamic lines

Sustainability

We take responsibility

Like all Interstuhl products, the PURE is consistently designed for sustainability. That doesn't just include a long service life – the ability to return products after use also plays an important role. After all, 98 % of the materials can be reused after the office chair has reached the end of its useful life. In addition, the PURE has received many environmental seals and certificates.
The Blue Angel is the most widely known certification mark in the world. For 40 years now, the Environmental Label Jury, the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, the German Federal Environmental Agency and RAL gGmbH have been distinguishing products and services that are particularly environmentally friendly. The LGA test mark 'Tested for harmful substances' has been awarded by TÜV Rheinland since 2007. Only products that perfectly meet the high re-quirements for emissions and hazardous substances are awarded this certifi-cation. After the inspection, the final products are also sampled randomly to ensure long-term compliance with the criteria. LEVEL is the first European certification for sustainability in office and non-domestic furniture for indoor use. The certification takes into account Euro-pean legislation, Green Public Procurement and the EU Circular Economy package. The focus lies on 'Materials', 'Energy & Atmosphere', 'Human & Ecosystem Health' and 'Social Responsibility'. BIFMA is one of the globally leading trade associations for the furniture industry. Since 1973, BIFMA has looked after the development of and compliance with safety, quality, sustainability and health standards. With its decades of experience, it helps ensure members deliver productive and sustainable work environments.
Side view of the PURE ergonomic office chair with black mesh backrest, black seat cover, black T-armrests and plastic parts in black with two green arrows arranged in a circle. The arrows indicate sustainability and reusability.
Product information and downloads

Brochure

Operating instructions

Lookbook

Configuration / CAD

Interactive manual

Complete brochure

Interstuhl Care

Do you have any more questions?

Alex Jones
Managing Director Interstuhl ltd. Andreas Letsch
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