High-quality plastic: The foldable cup holder is made of high-quality plastic, and the thick material makes it difficult to break, durable, waterproof, and easy to clean. The surface is matte, elegant, and beautiful; classic black matches any type of home decor.2 Installation Methods: 1. The multifunctional car cup holder can be placed in the driver's door or on all passenger doors, front and rear. 2. With a hook on the back, it can also be attached to the headrest bar.Universal cup holder: You can use it as a cup holder, beer mug, coffee mug, water bottle, or other beverage holder. It fits bottles or cups with a smaller diameter of 7.5 cm and can be used to store most cups. The weight range is under 900 grams. The plastic construction is completely waterproof and easy to clean.