CORELLE 1119431 Dinnerware Set, 16-Piece, Urban Grid Corelle Urban Grid Dinnerware Set includes four of each: 10-1/4-inch plate, 6-3/4-inch plate, 18-ounce bowl, 11-ounce stoneware mug. Striking lattice pattern in gray is part of each plate and bowl and won't scratch, wash, or wear off. Plates and bowls in this set are made with Corelle triple-layer strong glass, which is lightweight, stackable, and resistant to chips and breaks. Mugs in this set are made of durable stoneware. Pieces are dishwasher safe and can be used in an oven or microwave. Corelle glass is made in the USA, and comes with a three-year limited warranty against manufacturer defect.