Polish Pottery Coffee or Tea Mug - Eva's Collection "Flower Field" 3"dia and 3.5" tall, holds 8 Oz Oven, microwave, dishwasher and freezer safe without losing the beautiful colors and textures. Polish Pottery from Boleslawiec is scratch and chip resistant; lead and cadmium free Premium European Stoneware Certified Quality 1. Part of Eva's Collection Fired at temperatures over 2,300 degrees F for long-lasting beauty.