The ultimate mega egg grows up to 18 inches. Completely submerge the egg in a container of water, 1-3 days later the egg will start to hatch, in 10 days it will have reached it's full size. 3 assorted styles to collect.  Please note: As this item is an assortment we cannot guarantee a specific style, please let us choose on your behalf or state your preference in the comments section and we will do our best. Age 4+