There are several advantages of using a customized sun proof waterproof car cover for a car:

1. Protection: It provides protection from the sun, rain, snow, dust and other environmental elements that can damage the car's exterior and interior.

2. Durability: Customized car covers are made from high-quality materials that are built to last, making them more durable and longer-lasting than generic covers.
   

3. Fit: Customized covers are made to fit a specific make and model of car, ensuring a snug and secure fit that offers maximum protection.

4. Aesthetics: A custom cover can enhance the appearance of a car, making it look sleek and stylish even when it's not in use.

5. Convenience: A custom cover can be easily installed and removed, making it convenient to use and store when not in use.

6. Value preservation: Protecting a car with a custom cover can help maintain its value and resale worth over time, making it a smart investment.