Description Do you want your garden or yard to look different from your neighbors' at night? Now we will recommend you a set of 100pcs luminous man-made pebbles, which are made of durable resin and photoluminescent pigment material. Line a walkway, a flower bed or fill a planter with these unique acrylic pebbles. Only expose in the sun, they can glow in the dark and give off blue light. Features - 100 pieces of the man-made pebbles in one set will be sold together. - Color: blue (glow in the dark). - Material: resin and photoluminescent pigment. - and Glow in the Dark Cobblestone Man-made Pebbles. - Pebbles are about the size of cooked beans. - Line a walkway, a flower bed or fill a planter with these unique acrylic pebbles - After being exposed to daylight, these pebbles glow (blue) in the dark. - Glow lasts approximately two to three hours after full sun exposure. - Not toys, keep from children for chocking hazard Material: resin and photoluminescent pigment. Pebbles are about the size of cooked beans. Line a walkway, a flower bed or fill a planter with these unique acrylic pebbles After being exposed to daylight, these pebbles glow (yellowish green) in the dark. Glow lasts approximately two to three hours after full sun exposure.