Description to the product: 1.Each hatching toy comes as an egg which you can place in water, and about 48 hours later a dinosaur will be hatched out. Full instructions about how to hatch each dinosaur are detailed on each box. 2.Height of each egg: about 6cm /2.36in 3.Just add water in and watch the dinosaur hatching 4.The egg will start to crack in 12 to 24 hours 5.Dinosaur hatches approximately 48 hours later 6.Suitable for: children aged 3+ Instructions: 1. Place eggs in water. (Note: the water temperature must be lower than 30℃). 2. Your egg will begin to crack in about 12-24 hours. (Note: you should add water frequently or replace the water each day.) 3. The animal will continue to hatch out from its shell in 24-36 hours. You can help your pet to come out, but it will keep growing up to 3-6x its size with or without your help. 4. When the animal hatches, rinse it off as it will be slippery, and afterwards, you can either play with it or place it back in clean water and watch it continue to grow daily. (After leaving the water, it will become smaller gradually).