- These are our best-selling hatch'ems! - Just add water and watch as the egg gradually cracks open over a period of 48 hrs. - To reveal a dinosaur that grows to over 3 times its original size! Includes: 12 hatch'ems Creature: approx. 3" Display: 9.25”W x 9” D x 12.5”H Boxes: 3”W x 2” D x 4.25”H This product is the perfect stocking stuffer, Easter basket stuffer, birthday gift, or party favor! Products marked with the STEAM tag are designed to spark children's interest in Science, Technology, Engineering, Art, or Math, and grow their cognitive skills in these areas. Kids | Children | Education | Enrichment | Nature | Wildlife | History | Souvenir | Museum | Adventure | Archaeology | Geology | Science