This is a premium clay incubation substrate that is reusable and easy to sterilize. It changes color depending on moisture content, allowing you to monitor humidity levels. It is mold-resistant, promoting hatching success rates. Its high porosity allows it to retain water without decomposing. Made from a 100% natural and inert mineral blend, it can be used indefinitely after sterilization. Ideal for incubating eggs of various reptile species.