Polish Pottery Mugs are made of high quality stoneware. Each stoneware mug is hand crafted at famous Ceramika Artystyczna factory where artisans rely on time-honored techniques to meticulously decorate it by hand. The hand-painted surface is scratch resistant, durable, hygienic and easy-to-clean. This colorful mug is sure to be a treasured part of your Polish pottery collection. This is a beautiful piece of Polish pottery.