It can be placed on the back of the seat of the car, the door side for the water cup or drink;when the car is in the driving process ,heavy drinks will not be overflowed.
It can be installed easily by sliding between your door panel and window that is easy to take and reach
It fits regular sized cans,water bottle and juice boxes up to 3 inches in diamete
After installing in the back of the chair, the headrest should be removed and installed on the side of the door
Insert the plug into the window slot and not affect the window