Using these GENTLE MONSTER Her 01 sunglasses is easy. Just put them on like you would any other pair of sunglasses. When you're not wearing them, keep them in the original packaging to protect them from scratches and dust. Try not to expose them to extreme temperatures or harsh chemicals, as this could damage the frame or the lenses. To clean the lenses, use a soft, lint - free cloth. Gently wipe the lenses in a circular motion. For the frame, you can use a mild soap and water solution, but make sure to dry it thoroughly afterwards. With proper care, these sunglasses will last you a long time and keep you looking stylish.