Rain- x Original Treatment 3.5 oz - 800002242W

I used this years ago and it stands the test of time Great product. Once put on windshield, you don't even need wipers(But PLEASE use your wipers, for safety, don't listen to me.) The rain rolls right off the sides. Also works great in winter too. I use it in my snow blower chute. It keeps the snow from sticking. As I said you have to put this on and let it set a bit and then whip off the window. You will be surprised at the clarity and visibility out your window. It will last all summer... and winter. I was only disappointed in the size of the bottle. Read the ounces carefully. You get what you pay for. Advertisers love macro-camera lenses makes you think your getting the old standard bottle size. I would highly recommend this product