This pottery mug was made on my potters wheel from stoneware clay, then decorated by hand using colored slips that I formulated myself. The interior is solid turquoise that matches the rim and handle . The entire mug is covered in a clear shiny glaze that is food safe, and very durable. You can wash this mug in the dishwasher, and heat up liquids in the microwave. It stands 4 in inches tall, and measures 3 3/4 inches at the widest part of the bowl. It holds a generous 16 oz of your favorite brew. I love this bold and colorful design and the colors contrast nicely with the white background. It is perfect for that first sip of your favorite warm beverage in the morning. If you would like this mug in a set of 4 or 6, please convoy me for an estimate.