Positioning chairs are used for early upright standing in the sitting position. They are beneficial for children due to the fact that children can get to know the world. Furthermore, these devices have a good impact on all internal organs and digestive, circulatory, endocrine and respiratory system. Correct adjustment of chairs prevents the development of dysfunction and helps in bedsores as well as contracture prevention. What is more, they are equipped with a tray which makes it easier for children to study, play and have rehabilitation.