The Luna Stepping Stone is a perfect, functional accent piece for your lawn and garden. Create beautiful paths that illuminate at night and look like natural stone in the day. Typical glow times are 6-8 hours after receiving a day's worth of direct exposure from the sun. The Luna rocks look real because they are cast from actual stones found in local quarries. Use the Luna Stepping Stones as pavers to design a patterned slab. These stones are hollow so you can hide keys or other trinkets for emergencies. Not only are these rocks attractive, they are incredibly durable. Unlike actual stone which can crack after hard impacts or extended use, the Luna Stones will take abuse and never break. Harsh weather and extreme temperatures don't affect them either. Their low profile also keeps them from becoming tripping hazards and most lawn equipment should have plenty of clearance*. Installation is as easy as setting them in a desired location, backfilling them with dirt, sand or other soil supplement, and then anchoring them into the ground with the provided anchors. It only takes minutes to set up and requires no tools. *Use caution when operating equipment around Luna Stones as they may be pulled loose and become a hazard.