Made of Japanese titanium, the Ti-Double M300 Stacking Mug is crafted utilizing a historic manufacturing process. With its double-wall insulation, the M300 Stacking Mug is designed for hot and cold beverages. Pair the M300 Ti-Double Stacking Mug with the M200 or M400, and nest them together for easy storage at home or outdoors. 

Please note: double-walled titanium cannot be used for cooking or placed over a heat source.