The Topstar Sitness 15 office chair combines ergonomic design with innovative technology to ensure optimum sitting comfort for long periods of work. The high, ergonomically shaped backrest with breathable mesh cover ensures pleasant ventilation and can be adjusted in height using a practical ratchet mechanism to optimize the individual sitting position. The chair's special orthopaedic seat is ergonomically and orthopaedically shaped to promote a healthy sitting posture and minimize pressure on the back. Thanks to the unique Sitness® technology, the three-dimensionally movable seat surface enables a dynamic sitting posture that activates your muscles and prevents tension. The comfortable permanent contact mechanism enables infinitely variable locking so that you can flexibly adjust the backrest to your needs. The high-quality carpet castors make the Sitness 15 easy to move and ideal for different floor coverings. The 1D armrests also offer additional comfort and support without restricting freedom of movement. The Topstar Sitness 15 is the perfect choice for anyone who values ergonomic sitting and individual adjustment options, whether in the office or at home.