Dynamic sitting redefined – unleash your movement with the Sitness 4D!

Dynamic sitting redefined – unleash your movement with the Sitness 4D! The Sitness 4D adapts to your body and, with its revolutionary 4D mechanism, ensures active, healthy sitting – all day long. Perfect for anyone who wants more than just an office chair.

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Sitting redefined:
4D technology for your back power.

QBack pain due to prolonged sitting

Sitting is the new smoking – if you sit immobile at your desk for hours every day, you risk tension, pain and postural damage. Normal office chairs do not actively support your back – they allow you to sink into an unhealthy position.back pain due to prolonged sitting

QLoss of concentration due to poor posture

A poor sitting posture not only affects your body, but also your head. Poor posture leads to tiredness, inner restlessness and concentration problems – your energy levels drop and productivity suffers.

QInflexible chairs that don't adapt to you

Most chairs are static – you have to adapt to them instead of the other way round. This leads to incorrect sitting habits and long-term discomfort. An ergonomic chair must adapt dynamically to your body and your everyday life – not the other way round.inflexible chairs that don’t adapt to you

RNoticeable relief for your back - completely automatically

The Sitness 4D moves with you – in all directions. Thanks to its 4D seat mechanism, it ensures constant micro-movements that relieve your spine and activate your back muscles – without you having to think about it. You finally sit the way your body needs to: dynamically, upright, naturally.

RSitting that clears your head

Sitting that frees your mindWhen your body is relaxed, your mind can think freely. The Sitness 4D creates a new sitting experience through ergonomic design and movement – you become more productive, more focussed and stay mentally fit for longer. Your desk becomes a place of real presence – instead of an energy trap.

RA chair that adapts to your life

Everyone is different – the Sitness 4D knows that. It adapts to your proportions, your sitting position and your everyday life. Height-adjustable, depth-flexible, actively follows your every movement. You never have to bend again – your chair does it for you.

Ergonomic saddle seat - for a healthy posture

The Sitness 4D keeps your back relaxed – even when sitting for long periods!

Automatically supports an upright, back-friendly sitting posture
Actively relieves pressure on the back and spine
Promotes an open, active sitting position – ideal for concentrated work
Optimum pressure distribution for maximum sitting comfort
Ideal for long periods of sitting: less tension, more energy

Two base frame variants - for your strong working environment

Choose the model that suits your working style: Both versions offer full ergonomics – with different focal points!

Base with star base – for agile, controlled working

Provides more stability with high mobility
Ideal for creative, changing work processes and mobile use
Supports quick changes of position and productive working

TPU ring base – for maximum freedom of movement

The elastic TPU ring supports smooth, 360-degree freedom of movement
Promotes active sitting over the long term and improves posture in a playful way
Perfect for anyone looking for dynamism and a particularly lively sitting experience

4D suspension technology - dynamic seating with a fun factor

Rigid sitting is a thing of the past! The innovative 4D spring technology ensures movement and activates your muscles.

The spring mechanism inside the stool promotes constant micro-movements
Experience an active sitting experience thanks to flexible movement in all directions
Playfully trains your back muscles and improves your body balance
Leads to more active and upright sitting

Height-adjustable - perfect for every body size

Every person is unique – your stool adapts to you!

Easy to adjust thanks to the practical side handle for customised seat height
Ideal for home office, office or as a mobile standing seat
Supports ergonomic working
Ideal for changing users or flexible workstations

Unique seating experience - feel the difference!

Flexibility is becoming increasingly important – with the integrated carrying handle, you can simply take your stool with you wherever you go.

More energy, more focus, less tension
Sitting has never been so comfortable and active at the same time
Spring-loaded seat system – for gentle, controlled micro-movements
Noticeable relief for intervertebral discs and back muscles
Promotes a permanently upright posture through continuous movement

Integrated carrying handle - perfect for mobile working

With the Sitness 4D stool, you can turn sitting into a completely new experience – healthy, active and comfortable!

Move to a new workstation at any time thanks to the practical carrying handle
Maximum mobility
Perfect for flexible working environments
Quick workstation change
Ideal for agile working environments, coworking spaces and home offices

Sitness movement technology

The unique Sitness technology separates the rigid connection between the chair base and seat surface and creates a dynamic connection!

Exercises the back and spine
Relieves pressure on the intervertebral discs
Guarantees freedom of movement
Stimulates blood circulation
Improves concentration
Increases motivation

In cooperation with Deluxe Music – for your healthy rhythm in everyday life

As a Deluxe Music visitor, you’ve come to the right place: with a bit of luck, you could win the ergonomic Sitness 4D and bring more health into your everyday life. The perfect combination of design, movement and music – made to move you.

Aktion Gesunder Rücken

Sitness 4D is a certified model from Aktion Gesunder Rücken e.V. in the active chair category.

Our unique Sitness technology ensures three-dimensional sitting. The freedom of movement in every direction ensures more active sitting, which unconsciously trains the back muscles and prevents back pain.

German Brand Award

Sitness is a modern brand that stands for inspiring and sustainable seating solutions. With market expertise and modern product developments, Sitness is increasingly differentiating itself as a lifestyle brand. For this reason, we are delighted to receive the German Brand Award 2022 in the Excellent Brands Interior and Living category.

German Innovation Award

The Sitness 4D redefines the standards for ergonomic, dynamic sitting. The German Innovation Award recognises visionary solutions that improve our everyday lives – and the Sitness 4D is an outstanding example of this. Its unique concept combines functionality and design in a revolutionary way and sets new standards in the field of modern seating furniture.

The design-conscious - More than just a chair. A statement.

You’re not just looking for an office chair – you’re looking for a design highlight that combines style, innovation and high-tech. Your workspace is not run-of-the-mill, and your furnishings reflect your personality: modern, bold, unique.

This is exactly why Sitness will inspire you. The 4D freedom of movement brings dynamism to your everyday life, the futuristic design stands out from the ordinary and the smart features make the chair a real experience. Not just comfortable – but inspiring.

This chair is not just a piece of furniture. It is a statement of progress, aesthetics and smart innovation.

You are an explorer. You love the new. And you favour design that moves.

The performance-orientated - More performance. More movement. More success. You are an explorer. You love the new. And you favour design that moves.

Standing still is not an option for you. You want to be more productive, work more efficiently and always perform at your best – without jeopardising your health.

You know that true peak performance comes from harmonising body and mind. That’s why you’re not just looking for a chair, but a performance tool that keeps you moving, boosts your energy and improves your concentration.

This is exactly where Sitness comes in. The integrated movement function ensures active dynamics at the desk, improves your posture and supports your fitness factor – so that you achieve more, stay focussed for longer and pursue your goals without compromise.

You are performance-orientated. You don’t cut corners. And neither should your seat.

Seating comfort that doesn't disappoint. Adapted to your work situation. Fits everywhere. And above all suits you.

The modern nomad – Flexible. Comfortable. Perfectly customised.

Your everyday life is relaxed and dynamic, your way of working flexible – and your chair should be too. Maximum comfort meets smart ergonomics, because you need a solution that adapts perfectly to your work situation.

With Sitness, you get more than just a seat: the innovative 4D freedom of movement provides noticeable relief, promotes healthy posture and offers you the ultimate in sitting comfort – no matter how long your day lasts.

Whether working from home, in a creative session or deep work: this chair moves with you, not against you.

You are a modern nomad. You are looking for flexibility. And you deserve comfort without compromise.

Natural movements instead of rigid posture. Sound knowledge - healthy decisions.

Natural movements instead of rigid posture. Sound knowledge – healthy decisions You don’t make decisions based on gut instinct – you rely on science, facts and proven findings. When it comes to your health and ergonomics, you want clear evidence, measurable benefits and well-founded arguments.

That’s why Sitness technology will win you over: the 4D movement mechanism is based on the latest scientific findings and has been proven to improve blood circulation, strengthen back muscles and reduce tension – all confirmed by studies and ergonomic experts.

Sitting for hours on end doesn’t have to be unhealthy – if it’s dynamic. An active sitting posture promotes your well-being, increases your concentration and helps you to stay healthy and productive in the long term. A sound, scientifically proven solution – for a smart purchasing decision.

You are inquisitive. You rely on facts. And you make decisions with foresight.

Top performance needs the right basis.

You make decisions based on facts. You optimise your everyday life not according to trends, but according to proven methods. Efficiency, productivity and quality are not just buzzwords for you – they are your standard.

You sit at your desk for long hours because you’re making big things happen. But you know that real performance can only be achieved if the framework conditions are right. That’s why you do thorough research, put innovations through their paces and only back solutions that are measurably better.

Sitness technology is not a fad – it is based on sound ergonomic research. It promotes your posture, supports your concentration and ensures long-term well-being. A well thought-out, durable seating solution that works with you – not against you.

You are the Achiever. You focus on quality, think future-orientated – and make no compromises.