Will Bullas. Join the coolest club in the arctic and keep your tables ring free! This exclusive Animal World design is printed on a set of four, cork, 4.25" x 4.25" x 0.3" square coaster, featuring two penguins and a polar drinking at a bar, with the text, "The Bipolar Club." The dye sublimation printing process causes slight differences that are unique to each individual item.