The Forge 15 oz Ceramic Mug is constructed of thick ceramic with glossy speckled finish both interior and exterior. A curved handle provides a comfortable grip and durable ceramic has a non-metallic taste that will not rust or stain. Microwave-safe and suitable for hot or cold foods and liquids. Recommend hand wash only. Must be ordered in exact case quantities and may ship from CA. FDA certified. Not recommended for commercial use.