EUBUY Glow In the Dark Man-Made Sky Blue Pebbles Stone For Your Yard Walkway Garden Pool Pack Of 100 Line a walkway, edge a flower bed or fill a planter with these unique acrylic pebbles Color:Blue After being exposed to daylight, these pebbles glow (sky blue) in the dark Glow lasts approximately two to three hours after full sun exposure Not toys, keep away from children for chocking hazard!