Using your Serfas Bar End Mirror is easy. Just attach it to either the left or right side of your bike's handlebar end as per your preference. Make sure it's firmly in place before you start riding. While riding, regularly glance at the mirror to keep an eye on what's behind you. When it comes to maintenance, clean the stainless steel lens with a soft, damp cloth to keep it clear. Avoid using harsh chemicals as they might damage the eco - friendly nylon base. Store the mirror in a dry place when not in use to prevent rusting of the steel parts and degradation of the nylon.