Material: glass. Toughest tableware materials on the market with 3 to 5 times more resistance than porcelain in both the centre and the circumference. Reinforced with a high concentration of alumina to give its incredible strength. Material is fused together rather than mixed and all air pockets are removed to ensure a high density of material (0% water retention). Chip and scratch resistant and therefore maintains its perfect finish. Smooth and non porous surface. Perfect shine. Dishwasher safe: it can withstand over 1,000 industrial wash cycles. Ref: UTST2896