Using your Tifosi Selca sunglasses is easy. Just put them on like you would any other pair of sunglasses. They're great for all outdoor activities, like hiking, cycling, or just a day at the beach. When it comes to care, clean the lenses with a soft, microfiber cloth to avoid scratches. Don't use harsh chemicals or abrasive materials. Store them in a protective case when you're not using them to prevent damage. Also, keep them away from extreme heat or cold as it might affect the frame and lenses. Enjoy your stylish and functional sunglasses!