Excellant&eacute; Royal Red Collection 20-Ounce Mug, Royal Red 20-Ounce mug - Royal Red Made out of 100-Percent non-toxic melamine material Bold, sharp design of royal collection provides versatility in any occasion It is dishwasher safe and National Sanitation Foundation (NSF) approved Not recommend for microwave or oven use, but able to withstand up to 212 degrees fahrenheit