To use these Tifosi Svago sunglasses, simply put them on your face like you would with any regular sunglasses. They are designed to fit comfortably, thanks to the hydrophilic rubber and Glide technology. When not in use, store them in a protective case to prevent scratches. To clean the lenses, use a soft, lint-free cloth and a mild lens cleaner. Avoid using abrasive materials or harsh chemicals as they can damage the lenses and the frame. Check the frame regularly for any signs of wear and tear, and if you notice any issues, it's best to get them repaired by a professional.