Using these glasses is easy. Just put them on like you would any other pair of glasses. When you're out in the sun, they'll give you great vision and protect your eyes from glare. For outdoor activities, the grippy nosepiece and temples will keep them in place. Be careful not to scratch the lenses. If they get dirty, use a soft cloth to clean them. You can also use a mild lens cleaner. Store them in a case when you're not using them to avoid damage.