Author-illustrator duo Mac Barnett and Jon Klassen combine their talents and humor to address the age-old mystery of How does Santa go down the chimney? Terrific page turns and layouts propel the question-and-answer format of this wry holiday story. If he goes down the chimney, “Does his suit get sooty? Because chimneys have soot. And then does Santa do laundry before he goes to the next house?” A disappointed and soot-covered Santa (white) on one page is shown on the opposite page in a basement reading the newspaper in red heart boxers while his suit spins in the washer. Imaginative solutions and practical observations abound in this seasonal treat. (Ages 4-9)