You can now send a message at work while enjoying your mug as much as you enjoy your coffee! • Ceramic • 11 oz mug dimensions: 3.79″ (9.6 cm) in height, 3.25″ (8.3 cm) in diameter • 15 oz mug dimensions: 4.69″ (11.9 cm) in height, 3.35″ (8.5 cm) in diameter • Dishwasher and microwave safe