THIS GREAT DESIGN IS CONSTRUCTED OF HEAVY-WALL PLASTIC. THIS MUG LOOK AND FEEL OF A SCULPTURED MASTERPIECE. THE EXTRA WIDE BASE HELPS PREVENT SPILLS IN THE WORKPLACE. IT CAN BE RINSED AND REUSED. PATENT #D475,244. RUSH SERVICE IS AVAILABLE, PLEASE CALL FOR DETAILS. COMPLIES WITH FDA, PROP 65. 5" W X 4 1/8" H