Pebble diameter: 2-2.5cm
Package include:110 pcs Glow Pebbles per bag
Maximum glowing light:6 hours
If you have little solar lights that are next to them they don't 'appear' to be glowing.
It needs to be dark out, just like any other glow-in-the-dark product.
So if you turn on your outside lights they don't look like they're glowing.
Prohibit children from playing with, protect the children from choking and swallowing hazard.