100% natural sand without any additives or coloring. Perfectly assimilable by most reptiles. Increases calcium intake and therefore reduces the risk of intestinal blockage when animals ingest the substrate. Excellent substrate for bearded dragons, uromastyx, monitors, geckos, tortoises (Geochelone, etc...), and many other species. Available in 6 colors, in 5 kg and 2.5 kg.