1. Material The car back seat hidden hook is made of quality ABS material, ensuring strength and durability. The hook remains stable without wobbling while driving, allowing you to securely hang bags on it. Two hooks are provided for the car seat backrest to accommodate different needs. 2. 2in1 Design This car seat hook combines a phone holder with a car hook, compatible with most mobile phones ranging from 1.9 to 3.5 inches in width. It's an accessory for backseat passengers, keeping them entertained and hands during drives. for watching movies or shows on road trips. 3. 360° Rotation Once installed, the car headrest hook can rotate 360 degrees horizontally. You can attach it to the front or rear seats in any direction and hide it under the headrest when not in use, saving space and preventing collisions. 4. Easy Installation These hooks can be installed effortlessly without removing the headrest or requiring additional tools. A twistlock mechanism ensures a secure fit and prevents detachment. The 360degree rotation allows the hook to be hidden when unused, maintaining safety and preserving the car's original interior and appearance.