11oz glossy heart-shaped Handle Color Changing Cup Magic Mug, is made of high-quality ceramics and is exquisitely made. Make your picture or logo on the cup body in the form of heat transfer printing. This product is available in three colors: red, blue and black. Black has the best effect on hiding the logo or picture. When the liquid is not injected, you can see the logo vaguely by observing it carefully. After injecting the liquid above 65 degrees, your logo is clearly visible. Your logo is dimly visible in red before the liquid is injected, and the same is true in blue. After injecting heat above 65 degrees, your logo is clearly visible. The clearer the picture or logo, the better the effect. It is used for drinking milk, coffee, beer, flower tea, green tea, black tea, juice, beverages