... . Cork Coaster, Cork Cup Mat set 2. Materials: High density cork, Tinplate. 3. 4PCS per set, in a nice tin box, 4.Food-grade 1. NameCork Coaster, Cork Cup Mat ... : High density cork, Tinplate. 5.4PCS per set, in a nice tin box, 6. Food-grade painting and coating. Cork Coaster / Cork Cup Mat in Tin ...