I recently purchased your 'Brick' style sunglasses specifically for the impact protection the lenses provide. The first day in use, I was on a training day with my motor and dumped the bike in a turn. As I jumped free, my knee hit the windshield, which was fixed in place with plastic 'breakaway' bolts. The bolts did their job and broke to save the windshield, but the bolt heads flew all directions. One forcefully struck the lens of my glasses and was deflected, leaving a long scratch. Thanks for making a quality product and saving my eyeball. S.S.