<b>How to Use:</b><br>Remove the package and put the pebbles under the sun or light,make sure that each pebble absorb light. then glow naturally in dark environments for a long time<br><br><b>Specifications</b><br>Color:blue<br>Material: Polystyrene (PS)<br>Diameter: 0.8"-1.2"/ 2-3cm<br>Quantity: 600 pcs glow pebble<br><br><b>Note:</b><br>If you have little solar lights that are next to them they don't 'appear' to be glowing. <br>It needs to be dark out, just like any other glow-in-the-dark product. <br>So if you turn on your outside lights they don't look like they're glowing.<br><br><b>Prohibit children from playing with, protect the children from choking and swallowing hazard.</b><br><br>