Osso Ceramics Black and White Cookie MugThis hand thrown mug is carved with slender lines on the bottom half. The interior and top half of the exterior are glazed a satin white that shows off the speckles of the clay. The bottom half of the exterior, where the carved lines are, is glazed a matte satin black. : While some variation can be expected with handmade items, the sizes generally are: 12oz mug is 3. 5 inches tall, 3 inch diameter. : Dishwasher and microwave safe