is a heavy-duty, high-back swivel chair engineered for 24-hour continuous use with a 150 kg weight capacity. It features an ergonomic synchronous mechanism with weight adjustment, plus revolutionary 5D armrests adjustable in width, height, depth, rotation and foldability. The chair comes standard with seat/backrest toppers and features the distinctive "Interstuhl" front patch, delivering exceptional comfort for prolonged sitting sessions in demanding environments.