"Never live west of where you work".  This advice was given to me by a motorcycling friend, about the time I bought my first bike.  The reason for his advice, of course, is that you end up riding into the sun on the way to work in the morning, and on the way home in the evening.  Fighting sunlight has been a constant battle ever since, involving either changing face shields depending on the time of day, or wearing sunglasses.  No matter what I tried, I ran into situations where the reduced vision caused me problems when I turned to put my back to the sun, or drove into a tunnel, or as the sun began to set.

I have no excuse as to why it took me so many years of riding to find this product.  The Helmet SunBlocker really works!  The Sun Blocker is a UV-blocking dark green strip that adheres to the inside of your face shield, above your line of sight.  It shades your eyes from sunlight, but lets you see ahead (and down, toward your instruments) unhindered.  The SunBlocker installs quickly with a bit of soapy water, and stays put until you decide to remove it.  You can ride day or night without having to change shields.

The Helmet SunBlocker comes in two versions: Universal, for most full-face or 3/4 helmets, and an Arai version with cutouts for the Arai brow vents.