Nexify Bicycle Helmet Review Mirror with Bike Chainstay Protector - Adjustable Crystal Clear Viewing Reflection - Improved Riding Safety - Universal Compatibility CLEAR VISION - Always protect your blind spots while turning or traversing roadways with a flat rear view mirror that won't distort distance or images. VELCRO INSTALLATION - Thanks to the easy Velcro attachment, you can quickly add this rearview bike mirror to nearly any bike helmet. ADJUSTABLE DESIGN - Each mirror features a ball hinge that allows you to adjust it 360 degrees to suit your specific viewing angle needs. LIGHTWEIGHT, SUPER STRONG - A mere featherweight addition to your helmet, this bike mirror is made with polymer and aluminum for durability. IDEAL FOR ROAD CYCLISTS - Riding on today's roadways can be dangerous. A mirror adds valuable safety while riding on roads, in parks, or on a track.