80" x (W)0.Add a fun, whimsical touch to any outdoor area with the Glow in the Dark Stones by Pure Garden! The stones are pale green and then glow a bright green when they are fully charged, creating a magical effect in any area! The pebbles come in a pack of 500 and are powered by light absorbed from almost any source, including natural sunlight, as well as Fluorescent, UV or LED lamps.