"Add a splash of fun to your favorite drinks with the Glow Rocks. These ""ice cubes"" begin to shine and glow when activated by water.

-4 Pack. Add up to 4 Glow Rocks to a drink or split them up between many drinks.

-Colorful. The Glow Rocks cycle through every color of the rainbow for a beautiful light spectacle.

-Perfect for Cocktail Parties. Stand out from the crowd since your drink is sure to catch a few looks and compliments.

-Water-Activated. The Glow Rocks light up as soon as they come into contact with liquid and turn off when removed."