Bubble seat 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 that offer magnetic therapy, and can helps to relieve driving fatigue also give some support to the back. Elastic straps securely fasten the mat in the proper position. It’s 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.