First, the thermal properties of our rings make them safe to use. The slow heating properties of the rings makes them safer for both children and adults. The top edges are tapered to reduce the chance of injury form a fall, as would be experienced when falling against a sharp metal edge. The rings are precut for expansion to reduce the chances of random cracking. They are also double reinforced to keep them together as they expand from the heat.
Rings are also avaliable with an anchor cable for campground use.