Rattleware Cremaware White Cup, 20-Ounce, 4-Pack Made of highly vitrified ceramic these cups and saucers are chip resistant microwave safe and dishwasher friendly Cups feature a unique curved interior which preserves the crema and helps create beautiful drinks Bottoms of the cups are designed with notches to avoid a vacuum effect with saucers and to drain water after washing Cups come in six sizes and three colors Saucers sold separately