Coaster set featuring our sketch of four different types of hops! Set contains images of Willamette, saaz, nugget, and magnum hops. set of four coasters. 3.5 inches square, Flat - blank on back. 2 ink colors - charcoal and green. Printed on our new heavy duty coaster stock, 30% cotton content. These are good for multiple uses. And the ink will not run.