Car back seat hook: The back seat hook has a hidden extension arm, which can be hung into the mobile phone holder by simply flipping it over, allowing you to enjoy your own theater, giving the back seat hands-free entertainment and a beautiful appearance. Material: The car hook is made of silicone material and will not harm your car seat. Smooth serrated cover prevents hooks from loosening. HIGH QUALITY MATERIALS: The hooks are made of high quality ABS and silicone rubber, durable and without risk of breakage. You can hang your duffel bag on it without falling off. Multifunctional: The car back seat hook can hang shopping bags, grocery bags, etc., and can also be used as a mobile phone holder as an interesting portable theater. Installation method: The hook used in the seat headrest adopts a side-opening design, which is easy to install. No need to remove the headrest. The hook also swings easily so it can be mounted on the front or rear of the seat. It can be easily removed if you don't need it or replace it with another vehicle.