Topstar office chair Sitness Open X Deluxe, light grey, with armrests

This Sitness Open X Deluxe moves actively with you thanks to the clever Sitness joint in the seat.⁠‌‌‌‍‌‍‌‌‍‌‌‍‍‌‍‌‍‌‌‍‍‌‌‌‌‌‌‍‌‌‍‌‌‌‍‌‌‍‍‌⁠ The breathable mesh back and comfortable shell seat keep you fresh during long working days, with armrests for extra support.⁠‌‌‌‍‌‍‌‌‍‌‌‍‍‌‍‌‍‌‌‍‍‌‌‌‌‌‌‍‌‌‍‌‌‌‍‌‌‍‍‌⁠

When do you need a dynamic office chair?
This Topstar Sitness Open X Deluxe is specially designed for people who sit for long periods and want to relieve their spine. The integrated Sitness joint in the seat provides subtle movements while sitting, keeping your muscles active and improving your posture. You choose this type of chair when you have long working days and want to move consciously without getting up.

Why this size is the right choice
With seat dimensions of 470 x 470 mm, this chair offers a comfortable seat for most body types. The height-adjustable seat (450-550 mm) and the 580 mm high backrest adapt to different body heights. The Punktsynchron mechanism ensures that the backrest and seat move together, supporting a natural sitting posture.

Breathable materials for comfort
The backrest has a breathable mesh covering that allows air circulation, ideal for warm days or intensive work periods. The seat is upholstered with 100% Trevira CS, a durable material that feels comfortable. The contoured shape of the seat provides extra support to your thighs.

Practical considerations for your workspace
This chair has a maximum load capacity of 110 kg and comes standard with armrests for extra arm support. For use on hard floors, you can optionally order hard floor castors (article number 70699954) to prevent scratches.