Topstar office chair Sitness Open X Deluxe, blue, with armrests

This office chair moves with you thanks to the Sitness joint in the seat, so you stay comfortably seated for hours.⁠‌‌‌‍‌‍‌‌‍‌‌‍‍‌‍‌‍‌‌‍‍‌‌‌‌‌‌‍‌‍‍‌‌‌‍‍‍‌‍‌⁠ The point synchro mechanism and adjustable armrests provide a posture that suits you, with a 110 kg load capacity.⁠‌‌‌‍‌‍‌‌‍‌‌‍‍‌‍‌‍‌‌‍‍‌‌‌‌‌‌‍‌‍‍‌‌‌‍‍‍‌‍‌⁠

What does this office chair do for you?
This Topstar office chair is specially designed for people who spend a lot of time sitting at their desk. The integrated Sitness joint in the seat promotes movement while you sit, keeping your muscles active and stimulating blood circulation. This helps prevent the tension and fatigue that arise from prolonged static sitting.

Why choose this size and variant?
With seat dimensions of 470 x 470 mm and an adjustable seat height between 450-550 mm, this chair suits most body heights and desk setups. The 580 mm backrest offers sufficient support for your back without being too tall. The included armrests provide extra comfort and support for your arms while you work.

How does the Punktsynchron mechanism work?
This chair features a Punktsynchron mechanism that ensures the backrest and seat move in sync when you lean back. This keeps the angle between your thighs and torso optimal, helping you maintain a natural posture. The mechanism is infinitely adjustable, so you can precisely match the resistance to your body weight and preferences.

Practical considerations when using the chair
The chair has a maximum load capacity of 110 kg and is upholstered in 100% Trevira CS, a durable and flame-retardant fabric. For use on hard floors, you can optionally order hard floor casters (article number 70699952). The trough-shaped seat promotes a comfortable sitting position by tilting your pelvis slightly forward.