Our mugs are hand thrown on a potter's wheel in St Paul, MN. Each one is individually created so that no two are exactly alike! Kiln fired at 2100 degrees, each mug is durable and safe for microwave, dishwasher, oven, and freezer; and lead free and food safe. They are 100% MADE IN THE USA! Want to keep your coffee hot while you are on the go? Use one of our stainless steal travel mugs where ever you go!