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.
Feel the difference. Find a dealer near you now!

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.
In cooperation with Deluxe Music – for your healthy rhythm in everyday life
When music moves – and movement becomes tangible.
In co-operation with Deluxe Music, the rhythm of music meets the innovative 4D movement technology of our Sitness 4D. Because when you move to music, you can feel how liberating movement is – especially when your sitting is also in motion.
The Sitness 4D brings dynamism into everyday life – in time with the music, in harmony with the body. More flow, more energy, more feeling.
Music moves. Sitness moves with 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.