Suitable for most cars- it comes with 2 types of rubber plugs with inner diameter. It fits various car headrest bars. It is suitable for most car models with a rod distance between 7-18 cm. Adjustable Design - This road pal headrest supports 180° rotation for a variety of heights. Suitable for children and adults of different heights, just lift the headrest pillows up to save space when not in use. High quality environmental protection material -The car seat neck support is made of memory foam, ABS and leather, avoiding head collisions due to car shaking while driving. Easy to Install - The u shaped car headrest pillow does not require any tools. You can install it with your child in a few minutes and it will be a fun family craft activity. Unique comfort – enjoy relaxed holiday trips and sleeping in the car with the SuperSleep headrest from Flipline. So even long car journeys are fun.