Safe and Eco-Friendly: Made from the high quality resin material, eco-friendly, without any radioactivity and non-toxic. Finished and polished so that there are no sharp edges. Glow in the dark: Approximately 200 pieces of non-toxic glowing resin pebbles per bag. These pebbles absorb enough sunlight or other artificial lights during the day to glow for up to 3-6 hours at night. Ideal Decoration: Pebbles light from darkness is best night decor. The bewitching luminous pebbles in the dark and they come together will be more shiny, a special enough decoration to catch the attention of passers-by. Easy to use: Irradiate them for 2 or 3 hours in the sun or under a bright light. And then they will then automatically glow in the dark. If you irradiate them in the stronger light for a longer time, they will shine brighter and longer. Widely Used: Indoor and outdoor pebble decoration, perfect for decorating garden, pathways, flower beds flowers, decorative vases, aquariums, aquarium arrangements, waterscapes, swimming pool arrangements etc.