J.K. Adams 4-Inch Square Monogrammed Initial Slate Coasters, Set of 4, "C" 4-Inch square by 2-Inch thick coasters Slate with felt backing; set of 4; monogrammed letter C; perfect for oversize glasses Handcrafted and finished in Vermont, U.S.A. Hand wash with warm soapy water and dry promptly Manufacturer's lifetime warranty