The KIT seating system closes the gap in modular seat fittings for youths and adults. It provides postural positioning at the highest level without restricting the abilities and mobility of the user. The KIT seating system closes the gap in modular seat fittings for youths and adults. Thanks to the modular design, the KIT system is individually adaptable to the user. It offers optimal support, even for more complex deformities and clinical pictures. The new, patented wrap-around lap belt ensures stable positioning of the pelvis from the start and therefore a good seating position. Seat cushions with a cube structure and memory foam are available for pressure relief and decubitus prevention. The leg guides are independently adjustable in length and can be put in both an abduction or a windswept deformity position.