Melissa & Doug Activity Soft Book The Wonderful World of Peekaboo Lift Flaps. This is a well-loved book with frayed tag and some pilling. However all the flaps are still present and the squeaker still works. Your baby will love this sensory book with so many flaps, textures, and bright colors! It is well-loved because it was a huge favorite. Comes from a smoke free, fur-friendly home and item has been washed prior to listing.