Topstar office chair SI959WG T310, red, with armrests

This office chair moves with you thanks to the clever Sitness joint, so you stay smoothly seated even during long working days.⁠‌‌‌‍‌‍‌‌‍‌‌‍‍‌‍‌‍‌‌‍‍‌‌‌‌‌‌‌‍‍‍‍‌‍‍‍‌‍‌‍⁠ The breathable backrest and adjustable seat provide tailored comfort, with a 110 kg load capacity.⁠‌‌‌‍‌‍‌‌‍‌‌‍‍‌‍‌‍‌‌‍‍‌‌‌‌‌‌‌‍‍‍‍‌‍‍‍‌‍‌‍⁠

When do you need an ergonomic office chair?
A good office chair is essential if you regularly work at your desk for long periods. The Topstar office chair supports your posture and helps prevent back complaints by enabling dynamic sitting. With the integrated Sitness joint in the seat, you stay subconsciously in motion, which promotes blood circulation and reduces muscle tension.

Why choose this size and version?
This office chair offers a seat width of 480 mm and an adjustable seat depth of 480 to 530 mm, making it suitable for users with different body dimensions. The height adjustment of 420 to 530 mm ensures you can always set the right seat height. The included armrests provide extra support for your arms and shoulders while working.

How does the point-synchro mechanism work?
The point-synchro mechanism ensures that the backrest and seat move in sync when you lean back. This keeps the angle between your thighs and upper body constant, which promotes a natural sitting posture. The breathable mesh backrest, with a height of 600 to 660 mm, provides good ventilation and temperature regulation during long working days.

Practical considerations for optimal use
This office chair has a maximum load capacity of 110 kg. For use on hard floors, you can purchase optional hard floor castors (article number 70699952). The 100% Trevira CS upholstery is flame-retardant and suitable for professional environments where safety regulations apply.