1-Do not put on or take off your sunglasses with one hand. 2-Do not place the lenses upside down on a hard surface. 3-Do not carry them without a protective case to prevent them from getting crushed or deformed in your bag or pocket. 4- Clean them daily with clean water and a soft cloth to prevent corrosion and damage from acidic skin secretions. 5- Keep them away from cosmetic products, acetone, alcohol, and dusty environments. 6- Do not leave it exposed to direct sunlight or heat on car windows, at the beach, or on sand or concrete surfaces. 7- Do not use in environments requiring protective eyewear, during sports activities, or in saunas. 8- Never use your sunglasses if they have lost their protective qualities. Sunglasses