This pack includes one Dino World Grow Egg, featuring assorted dinosaur hatching eggs for kids. Each egg is designed to be submerged in water, where it gradually cracks open to reveal a hidden dinosaur figure. The dinosaur continues to expand when left in water, reaching its full size over time. The eggs are made from a safe, non-toxic polymer material. To hatch the dinosaur, submerge the egg in water for approximately 24 hours. For maximum growth, leave the dinosaur in water for an additional 1-2 days. These eggs serve as an educational tool, demonstrating the science of water absorption as the dinosaur grows. The hands-on activity engages children as they observe the hatching process and discover the hidden dinosaur inside. Suitable for dinosaur-themed gifts, party favors, classroom rewards, or holiday treats like Easter baskets and stocking stuffers. This product is a JA-RU brand toy, compliant with US safety standards. Ideal for bulk purchases for events, carnivals, or as small prizes.