I bought this one last year off Amazon
https://www.amazon.co.uk/gp/product/...e?ie=UTF8&th=1
I assume this is available in the US? Silver side goes up against screen to reflect heat and light and black side faces inside car. Really good fit and even has a small velcro strap to fit around the rear-view mirror. Does a decent job of keeping the worse of the heat off the inside of car.
I would buy again if I lost this.