Magic 11oz Ceramic Mug W/ Foss Logo

This mug has a black glossy finish when it's empty. When a hot beverage is added, the mug reveals the Foss logo. Perfect for your morning coffee, a hot chocolate, or any other hot beverage you enjoy.*The mug is not microwave and dishwasher safe.* - Black glossy finish - Reveals the print when exposed to hot liquids - Handwash only - Not microwave safe