The bottom interior of the Mackinac Island, Michigan mug showcases the nickname Jewel of the Great Lakes and includes an additional graphic of a lighthouse. Americaware Souvenir Mugs are the highest quality stoneware mugs available. They are microwave and dishwasher safe. Mugs dimensions are Height 4.75 inches, Width 4.125 inches and Depth 4.125 inches. Weight is 1lb. 5oz.