Description: The Reusable color changing coffee cupslook plain before they change color, but add hot water and pour in your favorite winter drink, like coffee, and turns into beautiful colors that match the lid of the coffee cup There are five colors to choose from: black to red, orange to yellow, green to light yellow, purple to light pink, blue to cyan. Each color represents your mood today and starts a good day! They are dishwasher safe and microwaveable. They have a wonderful feel to them and handle does not become hot plus they do not sweat. Holds 16 Ounces. Not only will you enjoy your mug but they make a great Unique Gift!! We also have other listings in different quantities and colors. Specifications: Material: food grade PP, environmental protection, health and high temperature resistance Color: as shown in the Size: as shown in the figure Capacity: 473ml / 16floz Dishwasher safe, microwave safe, temperature resistant (120 ° C / 248 ° f) Color change effect: add hot water above 40 to change color Package Included: coffee cup*1 Notes: Note: please remove the cup cover when heating in the microwave oven Please allow 1-3cm errors to the actual dimension due to manual measurement! Thank you ! If you have any question, please contact us before leave negative feedback, we will try our best to serve you. Thank you for your positive feedback and support, please feel free to buy!