Sealike 100 Pcs Romatic Man-made Glow in the Dark Pebble Stones for Garden Walkway and Swimming Pool Decor Decorations with Stylus (Blue) Material: Photoluminescent pigment + resin Line a walkway, edge a flower bed or fill a planter with these unique acrylic pebbles After being exposed to daylight, these pebbles glow (yellow green)in the dark Glow lasts approximately two to three hours after full sun exposure warning! Not toy, keep away from children for chocking hazard! Pkg include:100 Man-made Glow in the Dark Pebbles Stone with a stylus