To use these sunglasses, simply put them on your face. They'll instantly add a touch of Don Brothers style to your look. When you're not wearing them, keep them in the provided case to protect them from scratches and damage. Use the wiping cloth to gently clean the lenses regularly to keep them clear. Avoid exposing them to extreme heat or cold, as this can affect the quality of the glasses. Also, don't bend or twist the frames too much, as it may cause them to break. Enjoy your stylish new sunglasses!