Neutron Dice are three-layered dice featuring a shining band of pearlescent color as the center layer, nestled between two clear transparent outer layers. When viewed from the side, they appear as three layers, but when viewed from the top or bottom, the appearance changes and they suddenly look semi-solid with numbers that seem to float above a colored surface! View them from an angle, and suddenly they look like they have two layers! Each set comes in the Gatekeeper Games dice keep case!