Using your Pit Viper sunglasses is easy. Just put them on like you would any other pair of sunglasses. They're designed to fit a wide range of face shapes, so you should find a comfortable fit right away. When you're not using them, use the included Limpcloth™ to gently clean the lenses. Avoid using harsh chemicals or abrasive materials as they can scratch the 1.2mm high - index plastic lenses. Store your sunglasses in a safe place to prevent them from getting bent or damaged. And don't forget, these sunglasses offer 100% UV protection, so they're great for outdoor activities. Enjoy your new Pit Vipers!