These cushions are good at minimizing heat and can absorb small vibrations, like those you would experience while riding in a car. Gel cushions typically use a contoured solid foam base to help contour around the body. Encased in a protective cover, gel cushions are easily maintained and cleaned. To ensure longevity, kneading the gel cushion’s surface periodically will help maintain a fluid feeling. Check the cushion’s owner’s manual for more detailed instructions.