9-15mm Aqua Glow in the Dark Gravel **7 Kilos available
Made using advanced ceramic technology and Glow powder.
Sizes are approximate, as gravel does vary in size. They are light pale green by day
Glows up to 10 hours when fully charged. To charge, simply expose to light.
WARNING: Not for use by under 3 year olds, choking hazard and may have sharp edges.