Uhome 200 pcs Man-made Glow in the Dark Pebbles Stone for Garden Walkway Sky Blue--Making Your Garden or Yard Looks Different from Your Neighbors' at night Color: sky blue in the dark; Milk white in the daylight Material: Photoluminescent pigment + resin Please expose the stars stickers to the sun in the daytime to absorb enough light, so that they can glow in the night better. Line a walkway, edge a flower bed or fill a planter with these unique acrylic pebbles Pebbles are about the size of cooked lima beans