A Teacher's Heart Mug. Let a great teacher know you recognize and appreciate all they do when you give them this heartwarming ceramic mug with a message about the heart of a teacher. Blue font on white makes a pretty presentation and an oversized handle makes it easy to wrap your hands around a nice, warm cup of coffee or tea. Unglazed, recessed base. On mug: A teacher's heart is where it starts. Dishwasher and microwave safe. Holds 16 oz. 5.75" W x 4" H x 3.75" D