I just recommended this product to my best friend, who is a driving instructor. Many years of sun exposure are starting to result in small cancers, and a possible ear lobe melanoma. This product is just what he needs, on both of his car's sun visors. The simple dark plastic device easily extends alo...ng the side windows to protect the entire head. We personally use extend-a-Visor on our two SUV's and sedan. The only disappointment has been the looseness of one of the plastic inserts which causes it to unexpectedly fall to its lower position, sometimes causing a start to the driver. Our other Extend-A Visors continue work flawlessly. I suspect that our one problem can be temporarily cured with a small piece of tape, or by replacement of this reasonably priced skin-life protection product.Read more Less