Discover the beauty of the U.S. National Parks with your own little park ranger from coast to coast! 16 stunning parks are featured including the Great Smoky Mountains, Big Bend, Glacier Bay, and more. The Board Book Set includes 4 mini board books, 8 chunky pages per book, packaged together in a slipcase box – Each book: 4 x 4 x 1″, 10 x 10 x 2.5 cm – Slipcase box: 4″, 10 cm cube – Greyboard contains 90% recycled paper. Printed with nontoxic inks. – All Mudpuppy products adhere to CPSIA, ASTM, and CE Safety Regulations