This fossilized dino egg doubles as a container. To lock the egg, slide the 4 tabs on the rim of the bottom piece into the slots on the bottom of the top piece and twist 45 degrees counterclockwise. To separate the pieces, twist the top clockwise and pull directly down. Note: the first time locking the egg may be difficult but opening and closing the egg will smooth out the interfaces.

Interior dimensions are 5.9" (150mm) tall with a maximum inner diameter of 4.1" (104mm).