Celebrate your unique style or sense of humor with the 'Mr Sudoku - Ideal For Puzzle Enthusiasts And Brain Teaser Lovers, 11Oz Ceramic Coffee For Sudoku Fans And Logic Puzzle Solvers Mg5982' coffee mug. Made from durable ceramic, this 11oz mug is both microwave and dishwasher safe, perfect for daily use at home or in the office. A great gift for birthdays, holidays, or just because!