Get ready to be blown away by this extraordinary ball to hit the ground. It's gravity-defying features will turn a routine game into an out of this world free-for-all. The Lava Ball forces you outside because its inner yellow cracks only change colors in the sun’s UV light. Made out of the same material as the Moon, it has the same bounce. bounces high like the Moon! Watch the yellow cracks change to red right before your eyes!