PLEASANT SIESTA-The main design of the car seat cushion is to provide passengers with head and neck support when they fall asleep, whichmakes for a more comfortable siesta.Suitable for most vehicles with headrests. WIDTH AND HEIGHT ADJUSTABLE-You can adjust the width between the two headrests by selecting the slot position on the telescopic support.The pillows can also be raised and lowered and rotated 180 degrees to accommodate different heights. GOOD CARE FOR PASSENGERS-Car seat cushions can comfortably support one side of the head and neck,relax the muscles and prevent the neckfrom floating due to prolonged flexion, fatigue and pain.