Your coffee will stay hotter longer with the naturally insulating properties of these gorgeous mugs. Smooth glaze coating in rich color is extremely strong, resists sticking, and is easy to clean. Microwave safe. Dishwasher safe. Diameter: 4.0. Made in France. Capacity each mug: 14.0 oz. Weight: 12.0 oz. Emile Henry offers a limited household ten-year manufacturer against breakage due to defective workmanship. Please refer to package documentation or the Emile Henry website for details.