Polish Pottery Coaster made by Ceramika Artystyczna (Red Breasted Robin Theme) Signature UNIKAT Hand made and hand painted in the heart of Europe in the town of Boleslawiec in Poland Lead and cadmium free. Safe to use in: microwave, dishwasher, oven up to 480 F, freezer Hand crafted from natural white clay by highly skilled artisans, highly collectable Fired twice, extra durable, crack and chip resistant, intended for everyday use, easy to clean Long lasting, colors will never fade. Dimensions: 4" wide, 4" long, " high.