The thesis deals with the design of a seating element with a focus on healthy sitting. This sitting is by tilting the seat so that the spine is deflected correctly. The seating element is designed for use in the so-called semi-sitting semi-seat, ie using a higher, sometimes inclined table. The work has two parts. The first one focuses on theory, history, sitting issues, ergonomics and the influence of sitting on human health. The second practical part deals with the design, searches, stages of the seating element such as sketching, 3D modeling, production of the working model, seating test and finally production of the functional sample. The result is a seating design that allows a healthy sitting.