This round silicone coasters are durable, waterproof, non-slip, heat-insulating, reusable and ECO friendly. After it absorbs enough light, it will automatically emit green light in the dark. Slightly raised edge design making the coasters hold excess water or soil spillage, and making the table, balcony or any indoor place where you want to put plant pot keeps clean. Washable and easy to clean, stain resistant and quick drying. Heat insulation and can be used for teacups and prevent cold and hot drinks damaging furniture. Can customize your logo on it.