Dig into dino science with the National Geographic Glow-in-the-Dark T. Rex Dissection Lab! Use the included tools to dissect a lifelike T. rex mould and uncover glowing bones inside, then assemble them into a 25.4 cm-long skeleton that glows in the dark! The full-colour Learning Guide is packed with amazing T. rex facts to fuel kids' curiosity about prehistoric life. Plus, with a refill pack included, the fun doesn't stop after one dissection. It's a hands-on activity kids can enjoy again and again! We make the highest quality hands-on science toys, and all products are backed by exceptional service. With a mission to inspire people to care about the planet, the National Geographic Society is one of the world's largest nonprofit scientific and educational organizations.