Using your VitaJuwel ViA Heat Insulated Crystal Infusion Bottle is easy. First, if you want to make tea, place your tea leaves in the extra - large tea strainer (sold separately) and put it in the bottle. Then fill the bottle with hot or cold water. For crystal water, just add water and enjoy the benefits of the gemstones inside. When it comes to maintenance, wash the bottle with mild soap and warm water after each use. Avoid using abrasive cleaners as they can scratch the glass. Also, handle the bottle gently to prevent it from breaking. Keep it in a cool, dry place when not in use. This way, your bottle will serve you well for a long time.