Luck of the Irish! The shamrock stands as a symbol of Ireland, and this mug celebrates just that. Drink up, and (sham)rock on! All of our mugs are hand-thrown in stoneware clay and hand-painted. This piece was hand-dipped in our lead free Floating Blue glaze. As this item was made by hand, please understand each mug is subject to slight variations in color, shape, and size. Such is the beauty of handcrafted goods! This mug holds approximately 14 fluid ounces Microwave, dishwasher, and food safe. Avoid extreme changes in temperature and do not use on the stove/on an open flame. Proudly hand-made in Effort, PA, USA. Materials: Ceramic