Examine 13 different species of mammals, reptiles, fish, amphibians and birds with the Roylco X-Ray set. Each x-ray is printed on a durable plastic that is made to withstand. The sheets can be used on overheads, windows and light tables. Let your kid's inner biologist explore for hours on end with these real x-rays! Constructive Playthings is committed to providing safe, compliant products and a healthy, safe working environment worldwide. Constructive Playthings fully complies with the CPSIA and works closely with our suppliers and third party, CPSC approved laboratories to ensure we meet regulatory requirements. We require that all products meet all applicable federal regulations, which we review on a continuous basis