Fisher-Price Little People&reg; Bath Time Bubble Books (Set of 4) Set of 4 soft, water and stain resistant Bath Time Bubble Books for infants and toddlers. Featuring favorite Fisher-Price Little People characters. Set of 4 books. Each book is 8 pages and measures about 4.5 x 4 inches. This set of books is perfect for bath time, pool time, playtime, or anytime!