RH Activ - Office chairs for office and industry RH Activ follows your slightest body movement – comfortably as well as ergonomically. Since it – just like every one of our chairs – is based on 2PP™, our philosophy on active sitting. Besides, you only need to adjust a single lever, which is easy to use even when you are sitting in the chair. RH Activ is a office chair that – thanks to its simplicity and ergonomic design – fits most working environments, for example, in offices and industrial settings. This office chair comes in three basic models.