Features 1、Aluminum Cup Body: The cup body is made of food grade aluminum, which is healthy and hygienic, with fast temperature sensing and easy cleaning. 2、Fast Cooling: Since the inner tank is made of aluminum, it has good conductivity to temperature, so it can quickly cool down your beverages and refrigerate them quickly. 3、Mini Size: This set of cups is small in size, easy to carry, and has a cute little yellow duck pattern on it, which is very suitable for use in the office. 4、Comfortable Grip: The handle of the cup is ergonomically designed, which is comfortable to hold, non slip, not easy to fall off, and easy to take. 5、Summer Must Haves: In the hot summer, this cup allows you to drink a refreshing drink at any time, which is very cool. Specifications Item Type: Fast Cooling Cup Material: Aluminum Weight: Approx. 310g / 10.9oz Package List 1 x Yellow Duck Cooling Heating Cup 1 x Adapter 1 x Base