Jurassic World Blowouts are sure to be at the tricera-top of their list! Each of these blue and green blowouts features a cardstock attachment with a dinosaur printed on it. Blow on it and the colored paper blowout extends and retracts. Celebrate your little one’s birthday by handing out these party favors to all the guests at their Jurassic World birthday party! Blowouts do not make a sound.