We got caught in a down pour coming home from Miami Beach last night. It was still daylight and I had my dark glasses on. I took them off to see if there really was a difference in seeing through the rain. I couldn't believe what a difference they made. I gave them to Spud so he could see better and he couldn't believe what a difference they made. So, we are now firm believers in keeping sun glasses in the car. Especially down here where they really get the rain storms.