The Stackable Gray Stoneware Espresso Cup Mug Set of 4 with Holder is a modern and stylish addition to your kitchen or dining area. Made of ceramic, these round mugs feature a sleek gray color that is perfect for all occasions. The stackable design makes it easy to store and serve, while the set includes 4 mugs and a holder for added convenience. Enjoy your favorite coffee in style with this unique and practical coffee mug set.