modern-twist Pebbles Pattern, Grey, Silicone Coasters Drink & Wine Coaster, Non Porus Modern Design, Set of 4 Silicone Set of four coasters made from FDA-approved, food-grade silicone Write on coasters with dry-erase markers - just wipe down or rinse to remove ink and clean any spills Safe for people and the planet: free of BPA, PVC, lead, latex, and phthalates Appealing pattern designed by an independent artist and silk-screened by hand Measures 4" x 4"; heat resistance to 425 degrees F; dishwasher-safe