UZZO 50pcs Garden Yard Walkway Potting Aquarium & Fish Tanks Unique Decorative Gravel-Fantastic Magic Luminous Glow in the Dark Pebbles Stones Cobblestone (Blue) Making Your Garden or Yard Looks Different from Your Neighbors' at night Not toys, keep away from children for chocking hazard! Line a walkway, edge a flower bed or fill a planter with these unique acrylic pebbles After being exposed to daylight, these pebbles glow in the dark Glow lasts approximately two to three hours after full sun exposure