These mugs were wood fired in Todd Piker’s kiln. Their exteriors are unglazed though are shiny from the fire, their interiors are glazed with a simple white glaze. They hold a hefty cup and fit snuggly in the hands. They are quiet but sturdy and earthy. I have a few in stock, each varies slightly from the other but all are similar in shape and wood fired effect after being fired in similar spots in the kiln.