The Exo Terra Outback Red Stone Desert Reptile Terrarium Substrate is great for creating extensive desert landscapes in terrariums. This natural substrate lets you shape realistic red rock formations and secure heavy décor like rocks or branches. It has the same burrow-friendly, clumpable properties as the smaller pack, allowing reptiles to dig tunnels that hold their form. With its chemical-free, heat-conductive red sand/soil mix, it provides both function and a vibrant desert aesthetic for sizable enclosures. Available in Multiple Weight or Size options