Fortessa Fortaluxe Vitrified China Dinnerware, Hot Chocolate 4-Piece Mug and Tray Set Set includes: 2 each- 10 ounce bell-bottom mug, 10-inch by 5.25-inch tray with well Fortaluxe : vitrified china reinforced with alumina oxide or magnesium oxide for durability; glaze, thermal shock and edge chip resistant Coordinates with all Fortessa collections including serveware and accent pieces Featured in the finest restaurants and hotels in the world; restaurant/commercial grade quality Beautiful white color consistent throughout the entire collection; microwave and dishwasher-safe