10-20 mm Sky Blue Glow in the Dark Gravel
Made using advanced ceramic technology and Glow powder.
Sizes are approximate, as gravel does vary in size. Measured along the longest length, so it won't be over 2cm (bar the occasional one the slips through!)
Photos show top view and side view for depth. That is a vivid in the background.
Glows up to 9 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.