Togu Dynair Senseo Ball Cushion 400271 33cm Pearl: The original Dynair Ball Cushion Senso is an air-filled and dynamic training device. One side features round, gentle Senso nubs, while the other has a velvety smooth surface. It is considered a simple and space-saving alternative to a large ball and is used as a base for back and fitness training while sitting, standing, or lying down. The air filling, shape, and special high-quality material allow for dynamic sitting and training: minimal movements are constantly and immediately transmitted to the body. This inadvertently trains the deeper back muscles and the sensorimotor system. Unlike sitting on rigid surfaces, these crucial deeper muscles for body stability are also engaged. The cushion can be used anywhere - at home, in the office, or while traveling - enabling training without any additional time commitment.