This Frank Lloyd Wright Ceramic Coffee Mug with the Tree of Life design is an adaptation of one of Mr. Wright's most recognizable designs. There are several variations of this particular art glass pattern in the Darwin D. Martin House. Whether as a gift for an architect, for a true architecture aficionado, or of course for yourself, the Frank Lloyd Wright Tree of Life Coffee Mug is a perfect choice. Mug Capacity: 15 fluid oz. Dishwasher safe and microwave safe.