Each bag contains 200 non-toxic blue or colored pebbles. Light up your home and garden. Glowing stones made of premium resin, non-toxic and odorless, no radioactive substances. Fluorescent effect. Fine workmanshlp gives you a smooth surface without sharp edges. Eco-friendly and energy efficient, no power or battery needed. Remove the package and place the pebbles under the sun or light, make sure each pebble absorbs light. Glow-in-the-dark stones need enough sunlight to absorb ultraviolet light before they can glow in the dark. Ideal for decoration, ideal for DIY enthusiasts and eco-friendly light decoration. Suitable for water features, landscape decorations, potted plants, flower beds, lighting paths or walkways, gardens, crafts, aquariums, etc. We offer fast delivery, top quality products and the best customer service for every customer. If you have any doubts, do not hesitate to contact us. We offer 100% after-sales service.