The Sitag Xilium with intervertebral disc support is an ergonomic Swiss-made office chair that combines noticeable back relief with precise adjustability. At its heart is the distinctive, height-adjustable and finely adjustable intervertebral disc support in the lumbar region. It stabilizes the natural curvature of the spine, promotes an upright sitting posture and reduces fatigue during long periods of work. The synchro-mechanism coordinates the movement of the seat and back for gentle posture changes, while the load-dependent rocking mechanism automatically adjusts the resistance to the body weight. For concentrated activities, the backrest can be locked in place to provide stable support and calm movement. The seat height, seat depth and seat tilt can be individually adjusted so that the chair adapts precisely to different body proportions. The seat depth adjustment optimizes the thigh support and supports good blood circulation; the seat tilt adjustment enables a more active, forward-leaning working position - ideal for writing and VDU work. The upholstered, height-adjustable backrest provides ample support and adapts to the lower back with the intervertebral disc support. The 4D armrests can be adjusted in height, width, depth and angle of rotation, bringing the forearms ergonomically in line with the keyboard and mouse and noticeably relieving the strain on the shoulders and neck. High-quality materials, a quiet, durable mechanism and neatly arranged controls underline the quality standards. The covers are robust and easy to clean, while the frame ensures high stability and smooth everyday use. With its clear, timeless design, the Sitag Xilium blends into modern offices and home offices and impresses as a reliable seating solution that combines ergonomic substance, comfort and Swissmade precision in a coherent overall package.