Glow in the Dark Pebbles , Besiva 400pcs Outside Bulk Glow Stones Rocks for Outdoor Fairy Garden, Walkways, Driveway, Path, Fish Tank Aquarium DIY Decorations Gravel Eco-friendly and Safety: No electricity required.These durable glow pebbles are made from Photoluminescent pigment + resin, non-toxic, tasteless, non-radioactive substance. The fine workmanship provides you smooth surface with no sharp edges Easy Set Up: Luminous pebbles absorb enough sunlight or other artificial light during the day to glow up to 3-6 hours at night or any other dark environment Versatile Fit: Light up the walkway, the pathway or the driveway. Use these glowing stones on a plain landscape, on the garden floor, in the swimming pool or even in the aquarium, etc Outdoor&Indoor Use: Use multiple packs for larger areas.The pebbles are also safe for indoor use, but make sure to get enough sunlight for them to really glow once the lights go off Warranty Policy:Backed by a Besiva 12 Months Warranty & Carefree Service for Every Purchase