Safe and durable: no electricity required. Made from high quality resin, the garden pebbles are durable, non-toxic, odorless, non-radioactive and 100% eco-friendly. Principle of luminescence: It absorbs and stores energy after passing through visible rays such as sunlight, light, etc. The product absorbs and emits light repeatedly and has a lifespan of up to 15 years. Make your garden shine: you can use these pebbles to color sidewalks, edges flower beds or flower pots. They will make your garden or yard absolutely unique and cool. Multifunctional Fluorescent Stone: Stones are great for aquarium gravel, pond decoration, garden decoration, to Halloween walkway, walkway, aquarium gravel, glow stone, etc. Light decoration: these decorative garden stones glow in the dark under the sun and are very suitable for landscape decoration, very good for craft lovers and are environmentally friendly light decoration. Size: about 13-17mm Material: resin