It is compatible with headrest poles measuring 3.75' to 7' in diameter, accommodating a wide range of vehicles. Ideal for road trips or long rides, the Car Headrest Attachment offers optimal comfort and support. The 180º rotation feature allows for effortless adjustment and setting up of the headrest. Installing the Nap Buddy Car Seat Headrest is hassle-free and ensures prevention of neck fatigue and soreness The all black design enhances the aesthetic appeal while providing additional cushioning for the head and neck.