For you and your body Thanks to the built-in permanent contact mechanism, the backrest of this model follows all bodily movements and thus supports dynamic sitting. This strengthens your back muscles and promotes blood flow in the legs. Everything you need to know about the backrest The backrest made of comfortable upholstery material ensures that you can always enjoy a high level of seating comfort. You can also adjust the angle and height of the backrest to suit your needs. The Topstar Pro 30 office chair has double castors and is perfect for carpeted floors. Interesting facts about Topstar At Topstar, chairs are produced in one of the world's most state-of-the-art production facilities. The German company's product range includes a wide variety of seating options for office environments and other areas.