The Starry Night Color Changing Mug takes on a beautiful pattern when a hot beverage is poured, and then the mug changes back to its original color when the temperature drops. With unique design and exquisite craftsmanship, this pair of stylish coffee mugs makes an exquisite gift for friends or family; Show your loved ones how much you love them by giving them a mug that adds a touch of elegance to their daily life. The vibrant design adds an artistic touch to your coffee or tea time. SIZE AND CAPACITY: The ceramic coffee mug measures approximately 3.1 in/8 cm in diameter and 3.7 in/9.5 cm in height; this mug holds a generous amount of your favorite beverage up to approximately 11 ounces/330 milliliters, making it perfect for morning coffee or afternoon tea. MATERIAL: Our coffee mug with handle is made of ceramic, which is not only beautiful, but also very durable and heat-resistant; you can safely pour hot coffee, tea, or many other beverages without worrying that the mug will become too hot to handle or break due to rapid temperature changes. MULTIFUNCTIONAL USE: Thermochromic mugs are not only limited to coffee or tea, the cute mugs are suitable for holding a variety of beverages, both hot and cold; it can be used for a variety of occasions, from daily casual use to special occasions.