Harriet delivers the mail each day, carrying loads of letters and packages in her humongous pouch. After a long week of work, she decides to take time off to go to the beach with her little Joey. Along the way, she encounters a group of hilarious marsupials who ask Harriet to carry their stuff -- from swim fins to a kayak. Poor good-natured Harriet cannot say no until . . .
Young readers will discover the wonderful world of relative sizes--an important stepping stone to early math skills, when they meet Small, Medium, Large and their friends in this super-sized learning adventure featuring a double gatefold that can hardly contain all the fun!