The Sissel Sitfit is perfect for training the back and pelvic floor muscles. However, you can also use it as an active and dynamic seat. It is suitable for strengthening the foot and leg muscles and for vein exercises. The Sitfit relieves pressure on the upper body and strengthens the back muscles and is available in two sizes and three colors. The Sitfit can be individually adjusted using a valve. Matching velour cover available in 4 colors.