In Boleslawiec, Poland, artisans shape each ceramic mug from their native clay before using carved sponges and fine brushwork to adorn each with a variety of blooming hydrangeas. Each is then glazed and high-fired for everlasting beauty. Oven, microwave, dishwasher, and freezer safe. Handcrafted exclusively for Uno Alla Volta, from the heart and hands of the artisan. Dimensions - 5.25'' tall, holds 18 oz.