Age 5 and up Real x-rays printed on clear heavy duty plastic, Perfect for use on light tables, Study the difference between mammals reptiles fish amphibians and birds, Learn about each featured animal and the process of radiology, The idea guide contains many interesting facts about each animal such as habitat distinctive features and group type, Up to 8 x 10"" (10 x 25 cm), 13 x-rays SKU: EDRE32706