Using these Fender sunglasses is easy. Just put them on when you go outside to protect your eyes from the sun and look stylish at the same time. When you're not using them, keep them in the case to avoid scratches. To clean the lenses, use a soft, dry cloth. Don't use harsh chemicals as they can damage the lenses or the frame. If the sunglasses get wet, dry them gently. Also, be careful not to bend the frames too much as it might affect the fit and durability.