Features: 【Dynamic Color Changing Function】This bottle cup has a cold-activated function, allowing you to experience instantaneous fun. Once your cold drink is poured, watch the patriotic-themed pictorial change from a crisp white background to a bright full-color display of red, white and blue, making every sip an interactive experience. 【traditional White Finish】This bottle mug has basic and stylish traditional white finish that perfectly contests any environment. unalloyed white provides the perfect canvas for delicate UnitedStates-themed patterns and sets the stage for dramatic color-shifting effects. 【underweight and permanent Aluminum Alloy】This bottle cup is made up of stainless steel and is permanent. The large 500ml capacity is enough for your favorite cold drinks. It's underweight and portable, easy to carry around, yet sturdy enough to handle your various travel needs. 【Perfect for a variety of patriotic occasions】Whether you're hosting a backyard BBQ party, watching the Fourth of July fountains, or delighting an ice-cold drink at a vacation party, this mug is a great opener. 【Single Piece Packaging】Each order contains a complete color changing cup, color changing cup included. This single-pack is perfect for disposition use to experience its unique color-changing feature, or as a thoughtful gift that's ready to go with your favorite drink. Specifications: Matter: stainless steel Dimensions: see size chart Selling: single pack Practicality: Suitable for use in a variety of scenarios such as offices, homes, and outdoors. The cup body appears in different colors as the temperature changes, increasing the fun of drinking water and the reminder function. Package Includes: Cold discoloration stainless steel cup×1 note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.