The AT swivel chair is equipped with free-2-move Trimension® technology — a Wilkhahn innovation. It is the new universal standard for dynamic three-dimensional seating. Beyond its beneficial virtues, the new AT range is distinguished by its fluid and harmonious design. It is available in a wide range of styles, variants and options. The resulting adaptability makes the AT seat the versatile free-2-move solution par excellence. The automatic seat centring guarantees excellent stability in all positions, regardless of changes in posture. The system also adjusts the return force without user intervention. With AT, it is easier than ever to enjoy the stimulating virtues of the free-2-move concept: take a seat and adjust the seat height. The seat will do the rest, according to your size.