The Valkenstol M7 office chair is characterised by its ergonomic features, which enable active and healthy sitting. The centrepiece is the adaptive lumbar support which, together with the depth-adjustable seat and versatile 3D armrests as well as a 2D headrest, promotes an upright sitting posture. The mesh seat surface and ventilated backrest ensure cooling and breathability. With the ability to support up to 155 kilograms, the office chair is suitable for users between 70 and 100 kg, ideal for a height of 1.60 to 1.80 metres. Freedom of movement is achieved through swivelling castors, a backrest that can be adjusted up to 130 degrees and a tilting seat that allows users to remain dynamic while working.