If you're looking for a durable and inventive eco-friendly mug, then consider this "The Joy Of Fish" travel mug. Made of unique tourmaline, the lining helps to keep your drink tasting great and fresh the entire day through. Every tumbler is crafted with beautiful designs using an excellent engraving technique. The act of drinking water becomes not just a practical activity but one you can enjoy and from which you can derive simple aesthetic pleasure.
Technology: Tourmaline Anion - Patented Far infrared and negative ion Technology. The tourmaline lining of the tumbler heightens the flavor and freshness of any beverage. The tourmaline's charged negative ions add a pure taste while neutralizing harsh chlorine and other impurities.