Safety First Just as mirrors are important to your cars, so are bike mirrors important for your bike. Features Adjustability Telescoping neck with ball & socket lens for optimum viewing angle Quick Assembly Adhesive mount on any helmet Construction Molded thermoplastic with ultra-clear 800R glass lens Weight 0.03 lb / 12g Helmet Safety Mirror diagram Delta Guarantee We put a lot of effort into the design, engineering and materials that go into every product so they will look great, work well and last. That’s why we offer a limited lifetime warranty that covers defects in workmanship and materials. If something goes wrong, we will do our best to help solve the problem.