Chef Craft Cork Coasters with Plastic Frame, 4-Pack Protects surface from scratches and watermarks Works great even during summer months 4 Inch in diameter Cork soaks up water, while plastic frame prevents any from spilling over the side 4 pack of coasters comes with two blue and two black Protects surface from scratches and watermarks 4 Inch in diameter Cork soaks up water, while plastic frame prevents any from spilling over the side 4 pack of coasters comes with two blue and two black