These car seat back hooks are made of high quality plastic and are durable and practical. They are designed to hang on the back of the headrest, providing extra storage space for small items such as purses, bags, tissues, water bottles, etc. The hook-side opening design can be directly installed on the headrest pole and firmly attached to the headrest, ensuring they will not fall off during driving. The hooks are universal and can be used in most vehicles, including cars, trucks, SUVs, and vans. They are easy to install and remove and do not damage the headrest or interior of the vehicle. These car seat back hooks are a great way to keep the interior tidy and organized and a must-have accessory for any driver.