If you are looking for a comfortable ergonimic chair to sit it, the Haworth Zody ergonomic chair is one of the most popular chairs on the market today, for good reason.  Haworth developed the Zody chair with the help of Western Michigan University.  They measured just about every ergonomic adjustment possible when developing the Zody.  SPACE Inc is a preferred Haworth dealership that carries the Zody ergonomic chair as well as all the other chairs Haworth has to offer.  Below is a video demonstrating the features of the Zody.