backrest for cars typically refers to a support  designed to provide additional comfort and support for the lower back while driving.They are especially useful for individuals who experience lower back pain or discomfort during extended periods of driving. Can be used as office chair cushion, lumbar support for car seat or wheelchair lumbar support pillow etc….. Our Lumbar Support is specially designed for drivers, office staff, and the person who sitting for a long time. The lumbar support can keep your back cool and dry, super comfortable, and also suitable for all seasons. It fits the shape of your spine, and provide support without putting unwanted pressure on any muscle groups. its contoured and orthopedic design supports your lower back, reduce fatigue, soreness from oppression, relieve pressure by 50%, and corrects your posture