"I drive all over the country and spend a lot of time in my car, this product looked great. However, one broke very quickly and I feel that whilst they block out the sun to a certain degree, I feel that they also do hinder your vision. I don't need glasses, so no problems with my eyes. They also come down in front of your face and don't follow the shape of your windscreen, I thought they were more of a hindrance than a help and have put them in the bin."