DOSHISHA Ond Zone Tumbler [Navy Blue] Used a few times. No scratches or dents, it's clean. Manufacturer: DOSHISHA Product Name: ON℃ZONE Ond Zone Sub-Zero Tumbler 260ml Color: Navy Blue Material: Stainless Steel Model Number: OZFT-260NV ・When you put a drink in a mug frozen in the freezer, it instantly goes below freezing. ・Vacuum insulation keeps it cold. ・Built-in coolant for super cooling. Size 　Diameter: Approximately 7cm 　Height: Approximately 16cm