Sheffield Home Protective Decorative Cork Backed Placemats (Set of 4) (Zig Zag Pattern) Vinyl Set of 4 cork backed placemats Fantastic protection for your table Made from sealed hard board with heat resistant construction and a glossy finish Safe for use under plates and serving pieces up to 303 degrees Fahrenheit Measures: L:.2 in. x W:15.7 in. x H:11.8 in.