Please note: This is an assortment pack. 1 will be supplied and picked at random. Colours and decorations may vary. The Nurchums Mermaid Hatching Egg is a new and exciting product from Keycraft. Every pack comes with an assortment of purple and blue hatching eggs. Place in water and watch your egg hatch and grow! Will expand for up to 2 weeks and shrink when removed from water!