The OxGord Car Window Sunshade is a popular choice for car seat sun protection due to its affordability and effectiveness. These shades are made from a durable nylon mesh material that blocks UV rays and reduces heat inside the car. They are easy to install and can be adjusted to fit most car windows. The shades also come with a storage pouch for easy storage when not in use. With their budget-friendly price and positive customer reviews, the OxGord Car Window Sunshade is a top-selling option on Amazon.