These basic Glow in the Dark dice do exactly what you expect of them: they glow a greenish color in the dark. Like all glow in the dark dice, they must first be "charged" by being exposed to bright light. The more charged they are, the brighter they will clow. In the daylight these dice are a semi-opaque white color with a faint yellow-green tint to them. These are standard sized 16mm dice with black numbers.
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years old.