Premium MaterialThe gravel stones are made of high-quality resin, which is eco-friendly, non-toxic, non-radioactive, safe, tasteless, with smooth edge and no sharp corners, durable for long time use. Reusable DesignJust put the pebbles under the sun or light, after a reasonable time under sunlight (at least 2-4 hours), make sure that each pebble absorb light, it will glow in the dark and can be reusable. Easy to UseThe coloured stones are no electricity required and long lasting with less sun exposure. Just put the pebbles under the sunlight for a several hours, make sure that each one absorb light. Wide ApplicationsThe colorful luminous cobblestones are perfect for decorating aquarium, fish tank, vase, flowerpot, swimming pool, garden and yard, also can be used as a beautiful ornament to decorate the kids room. What You Will GetYou will get 150 pcs glowing pebbles with the shapes of starfish, conch, shells, water droplets, stones, etc, which is enough for your daily use.