Features: Easy to use, just put the pebbles on the edge of the walkway or flower beds, or use it for decorative vases, aquarium landscaping, gardening, swimming pool, bar, villa gardening potting, parks and so on. After sunshine during the day, the night walkway to launch up to three hours of blue or green light. Make your garden more beautiful. It can be used repeatedly, their life expectancy lasts up to 15 years. Non-toxic and tasteless, non-radioactive, environmentally friendly resin, non-mineral.