This is one mug in a three mug set. This is the green one, Flotsam -- the others are Jetsam (orange) and Tipsam (purple). The mugs were designed by Shag and produced in a limited edition of 250 by Tiki Farm, and were sold as a set. The three mugs in the set are different colors and heights, but each is designed to have two different faces, with shared features. Each face is on the mug twice, for a total of four interlocking faces.