In Brzeg, Poland, Ewa and her team form each ceramic mug from their local clay before using carved sponges and fine brushwork to adorn it with dolphins, starfish, crabs, and other motifs inspired by the wonders of the sea. Each piece is then glazed and high fired for everlasting beauty. Microwave, oven, freezer, and dishwasher safe. Handcrafted exclusively for Uno Alla Volta, from the heart and hands of the artisan. Dimensions - 3.25'' tall, holds 11 oz.