Get your little one started on the right track with this slipcased board book library set containing 10 mini board books. These 10 Peter Pauper Primer books will introduce your baby or toddler to important first concepts for every growing child as they are introduced to the world through learning their ABCs, numbers, colors, shapes, animals, and more! Each mini book measures 3-1/2 inches wide x 3-7/8 inches high. The full slipcase box measures 5-3/8 inches wide x 4-1/8 inches high x 3-5/8 inches deep.