The Gibson Nocturnal Gaze 4 Piece 18oz. Stoneware Owl Mug Set in Assorted Colors adds elegance and fun to your favorite warm beverages! Each figural mug is crafted from stoneware and finished in a shiny glaze for a durable and long-lasting shine. This collection is both microwave and dishwasher safe, making each cup ideal for everyday use and easy cleaning. This set comes in four colors for a fun and diverse set: purple, yellow, blue, and green.