Direct
The seat responds instantly to any shift in weight.
Top Unit · Movement mechanism
Freedom to move.
The Top Unit is located directly beneath the seat and allows it to tilt and rotate smoothly. Small shifts in weight set Sit-i in motion.
The central point of movement
Designed to move with you.
The narrow saddle gives you room. The seat follows your movement. You can easily change positions, turn left or right, and feel how Sit-i responds.
Controlled movement
Every small change is given space.
The seat follows small shifts in weight by tilting and rotating. Your trunk and hips remain involved as you adjust your posture.
Fluent
Tilting and rotation follow a smooth, controlled path.
Central
The axis of motion is located directly beneath the pelvis.
Active
Micro-adjustments keep the torso and hips engaged.
One integrated system
Move smoothly. Stay stable.
The Top Unit connects the seat to the Penthapod®, which supports the chair. On Pro models, the neutral position, rotation and changes in angle are shown directly on screen.
From principle to practise
Movement that suits your work.
The same controlled movement is applied in training, treatment, and daily work.
Training and sports
Experience targeted control, stability, and variety during training.
Treatment and care
Let the practitioner work actively and freely around the request for help.
Work and creativity
Brings subtle variation to prolonged work and sitting.
Experience the Top Unit
Feel how instantly movement can respond.
Discover which Sit-i suits your practice, training or work. We would love to show you how the central movement mechanism responds.