These Jurassic World Dino Reveal Battle Pack of dinosaur toys are ready for color change and battle fun. Each of the 2 dinosaur figures starts as an amber or tar-colored dinosaur. Use the included Battle Arena to swirl them in warm water and see the Dino Reveal surprise of the full coloration. Use the included sponge, dipped in cold water, to 'heal' the wounds. Empty the water from the Battle Arena to use it for fierce combat play.