How to adjust the space of the car cup?

1, the space of the car water cup does not need to be adjusted.

2. Every car basically has a water tank for the kettle. Depending on the size of the car, some cars have small water tanks that can only fit into a cup, and some cars are big enough to fit into a small thermos. According to the diameter of the sink, buy the right water bottle, and put it in just so that it won't fall off.

3, you can also put it on the side or you can buy something to hang a water cup.