【Practical and Protective】: This is an indispensable tool in the car or boat. It helps you fix the cup and avoid the trouble of finding a place for the water cup. To prevent liquid from the cup or water bottle from spilling or staining the car, the holder can be used to prevent it from falling or shaking. 【Foldable Design】: The product only protrudes 2.5 cm after folding. Therefore, when you don't need to use the water cup holder, you can fold down the ring of the holder and close the lid, making it easy to store and saving a lot of space. 【High-Quality Material】: Made of deformation and impact-resistant ABS material, it has excellent heat resistance and waterproof performance. It is completely durable in marine environments, and there is no need to worry about damaging the product even if you go out on a boat or cruise. 【Easy to Install】: The package comes with 4 stainless steel screws, which can easily install the cup holder in the desired position. When you want to fix the water bottle, just place the bottom of the bottle in the ring to fix it on the cup holder. 【Wide Range of Uses】 The cup holder can be easily adjusted to fit almost all cups, mugs, bottles, or cans with a diameter less than 6.5 cm. It can be attached to any flat surface, such as a car cabin, yacht, RV, home, office, workplace, etc.