These detailed mandala coasters are made from eco-friendly, sustainable cork wood. Cork is a popular wood for coasters not only because of its durability and softness, but because of its ability to soak up condensation from cold drinks and spills from hot drinks while resisting staining. Cork wood is also fast-growing, so it is sustainable to harvest. These beautiful coasters are a great way to protect your tabletops and counters from heat and cold.