shop Black Wavy Mug (oatmeal inside) PreviousSkull and Roses Mug (medium) NextOrnaments Black Wavy Mug (oatmeal inside) Black Wavy Mug (oatmeal inside) $40.00 Black clay with carved waves and colorful underglaze. Interior glazes with lightly speckled oatmeal coloring. Microwave and dishwasher safe. Add To Cart