Comfortable Nap Time: Car seat pillows are mainly used to provide passengers with head and neck support when they fall asleep, thereby providing a more comfortable nap time. The side pillows of the headrest are filled with a soft and thick memory foam pad, which is sufficient as a cushion. The pillowcase is made of sponge cloth, which is comfortable and breathable, and easy to clean. Fits most cars with headrests (steering distance should be greater than 3.75 inches). Width and Height Adjustable: You can adjust the width between the two headrest pillows by selecting the slot position on the telescopic support rod (minimum distance between the two pillows: 10.63 inches). The pillows can also be raised and lowered and rotated 180 ° to accommodate various heights. If not needed, just lift them up to save car space. Easy Installation: The headrest is removable, you can easily fix it on the headrest support bar. First, choose the right rubber washer and fix it on the car seat headrest. Then fix the telescopic support rod to the rubber washer. Finally, tighten the cover with a screwdriver. Good Care for Passengers: Car seat pillows can comfortably support the sides of the head and neck, relax the muscles, and prevent the neck from floating due to prolonged bending, fatigue, and pain. Keep your head from knocking on the doors and windows. Take care of your family, friends or business partners. Telescopic Design: The telescopic support rod is made of high-quality ABS material, which is stable and safe. The width of the pillow can be adjusted according to the width of the seat.