Ceramika Artystyczna Polish Handmade Mug 12 oz. (Blue Daisies) These beautiful mugs are perfect for your morning cup of coffee or tea Very durable stoneware - won't crack or chip easily Dishwasher, microwave and oven safe up to 400 degrees F (200 degrees C) Lead-free glaze, non-toxic, and impervious to abrasives Hand-crafted in Poland