Magnetic cushion helps prevent back pain, eases the pressure point promoting a good posture, and conforms to the contours of the body. Padded bubble material with magnets offers magnetic therapy and can help to relieve driving fatigue. Elastic straps securely fasten the mat in the proper position. Its lightweight property allows you to transfer it from one chair to another, suitable for almost all types of seats. Will fit into most chair seats. Ideal for work, home, and car.