-It also can be enjoyed as a room decorating item. [Caution] -Mug *Please be sure to wash the product before use. *Use of abrasive detergents or hard scrubbers may damage the surface. *The item follows New Food Sanitation Law of Japan and is safe. *Microwave safe. *Item may break and/or become discolored by usage of direct flame or oven. -Wooden Lid *Please be sure to wash the product before use. *Use of abrasive detergents or hard scrubbers may damage the surface. *Do not soak, boil, or disinfect with oxygenated chlorine-based chemicals. *NOT microwave oven, dishwasher, or dryer safe because it is made of natural wood. *Because it is made of natural wood, there may be individual differences in color and grain. *Please dry naturally as soon as possible after washing.