Polish Pottery 11 Ounce Bubble Handmade Mug From Boleslawiec Poland Ceramika Artystyczna Traditional Floral Stoneware Pattern Each piece is certified as original and of First Quality Microwave, oven (to 450 F) and dishwasher safe Non-stick surface, cleans up in a breeze (No staining) Lead and cadmium free Each piece is hand painted and imported from Boleslawiec, Poland