Retro Showa-era stoneware mugs You & Me Mug Set of 3 I found these while cleaning out my house. They look clean. Please understand that these are old items before purchasing. Stoneware has the following characteristics: It has properties intermediate between earthenware and porcelain, and is considered to be durable and less likely to break. It is fired at high temperatures, making it highly durable and resistant to chipping and scratching. It does not absorb water easily, so it has the advantage of being resistant to odors and stains. It has excellent heat resistance and can be used in microwave ovens and ovens. Shipping is included, so price reductions are not possible. The items will be disinfected with alcohol and shipped via express delivery.