Add a pleasant twist to your morning routine with this magic nautical Chart Mug. It appears black when cold, but reveals a vibrant nautical chart when exposed to hot liquids. That makes this mug a wonderful nautical gift for your family or friends.

• Ceramic
• Black glossy finish when cold
• Reveals the nautical chart when exposed to hot liquids
• Dimensions: height – 3.54″ (8.9 cm), diameter – 3.35″ (8.5 cm)
• Official NOAA nautical charts

Note that in some instances the coating might not be 100% opaque and an outline of the design might peek through a little. You shouldn't put magic mugs in a microwave or dishwasher since it can damage the coating.