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