Maileg Big Sister Princess and the Pea MouseStep into a story with the Maileg Big Sister Princess and the Pea Mouse. After a long day of imaginative adventures with your little one, this royal mouse is ready to rest. As any true princess deserves, her bed is stacked high with the softest, comfiest mattresses for a truly luxurious sleep. Hidden beneath the pile, though, is a tiny pea. Just one small pea is enough to keep the princess tossing and turning all night, proving once and for all that