Increases calcium delivery in all desert species of reptiles. Excellent substrate for bearded dragons, uromastyx lizards, monitors, geckos (including leopard geckos), and desert tortoise. All Natural Vitamin-Fortified Calcium Carbonate Substrate. No Artificial Colors Or Color Sealers. Fortified With Vitamins And Beta Carotene For Increased Health Benefits. Does Not Contain Fat-Soluble Vitamins Which Can Be Toxic In Large Doses. 5 POUNDS WHITE