Using your Pit Viper 1993 Polarized 2000S sunglasses is a breeze. Just put them on like you would with any regular sunglasses. They're great for various occasions, whether you're out and about or just relaxing. Remember, these sunglasses are not ANSI Z87+ rated, so if you need them for work where Z87+ is required, look for the safety - rated ones. For maintenance, use the Limpcloth™ included in the box to gently clean the lenses. Avoid using abrasive materials that could scratch the lenses. When you're not using them, store them in the Firmcase™ to protect them from damage. The Tie Downs™ Retainer Strap can be used to keep your sunglasses secure when you're moving around.