It is the large backrest which, through its ergonomic lines and profile contours, strikingly conveys the high level of comfort offered by the Sedus quarterback to the eye. The backrest is available in three models and can be removed without tools for easy and space-saving packing and shipping. The design is based on the characteristics of generosity, lightness and dynamism. High ergonomic comfort is ensured, for example, by the height-adjustable lumbar support, a mechanism called Similar with spring tension adjustment and a seat depth adjustment of up to 60 mm.