This light pebble store light and glow in the dark all by itself Equip it flower boxes in the house, flower beds in the garden, or decorating the pebbles in trays or wherever you want to set the tone ... Also great as a small "night light" in the nursery! Deceptively crafted from plastic, size 2-3 cm. Remember when using outdoor use that can discharge the stones during the dawn again - you need to do again (briefly) light (flashlight, etc.) and shine once again! There is no solar! You also fit with the combination of rain, then sun. The stones can burn may / will be dark.