In the Polish village of Brzeg, artisans shape each mug from local clay before using carved sponges and fine brushwork to create our exclusive summertime shell and starfish motifs. Each piece is then glazed and high-fired for lasting durability. Microwave, oven, and dishwasher safe. Handcrafted exclusively for Uno Alla Volta, from the heart and hands of the artisan. Dimensions - 4'' tall, holds 24 oz.