Advantage:Material: It is made of silicone material, with a smooth surface, non-stick, flexible, waterproof, and not easy to break or deform.Design: Raised edge prevents water spills from cold drinks on the countertop, keeping your table clean.  The non-slip bottom keeps the coaster firmly in place on the table.Easy to Clean: Rinse them under running water and wipe them with a damp cloth. Put it into the dishwasher for easy cleanup.Wide Application:  The drink coaster is suitable for universal water cups, coffee mugs, water bottles, tea cups, etc.Specification: Material: SiliconeColor: White Diameter: 10 cm/3.9 inchThickness: 0.4 cm/0.15 inchPackage Included: 4pcs x drink coaster