Strong Material: This car cup holder is made of strong and durable ABS plastic, which can easily hold drinks or cups and can be used for a long time without easily deforming. Compared to cup holders made of fabric, it is wear-resistant, will not break easily, waterproof, and very easy to clean—just wipe with a wet towel. Practical Function: Whether driving normally, resting中途, or traveling long distances, when a passenger in the back seat wants to drink but has no cup holder available, this product helps hold most drink containers. Wide Application: This car headrest cup holder measures 3 x 3 x 5.5 inches and can be mounted on the headrest or door of your car, suitable for vehicles with seat headrests that have two long rods, such as sedans, SUVs, MPVs, and similar models. Easy Installation: This product installs quickly on the back of the seat or the side of the car door. To install on the back of the seat, remove the headrest and attach the cup holder. To install on the door side, insert the buckle into the window slot without affecting window operation.