Owl Coffee Mug. High Fire Stoneware Microwave and Dishwasher safe. Microwave and Dishwasher safe. 4" x 5" - 12oz Owls, the symbol of wisdom. The silent night bird. Stealth in the night is due to their large wing span relative to their body size, combined with their fringe-like wings. This owl is flying over a field with a tree line and full moon in the background.