Healthy material, no lead, no cadmium and other heavy metals, fine porcelain, smooth glaze; can be used in direct contact with food and can be consumed with peace of mind. Beautiful objects always bring us a wonderful sense of ceremony, besides high face value, they also have many uses and are pleasing to the eye. Made after high-temperature firing, the porcelain is hard and can be directly put into the microwave oven to heat up and use, saving your time and energy. The bottom of each mug is smoothed to prevent scratching the table surface. Made from ceramic material, measuring 5.43*3.15 inches, this custom vintage ceramic breakfast mug 12oz. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: BPA-free, leak-proof, travel-friendly.