The product is a set of four paperback books from the Magic Tree House series by Mary Pope Osborne. The books include titles #1, #4, #9, and #10, all in good condition. The books are written in English and fall within the genre of juvenile fiction. The series explores themes of fantasy, magic, time travel, and features animals and creatures from the prehistoric era, specifically dinosaurs. Published by Scholastic, Incorporated in the United States, these trade paperbacks are an enjoyable read for young readers interested in adventure and learning about the past.