Global Goodwill Coleur Series 12-Pieces 7-Ounce, Stacking Cup, Coleur Ivory 7 ounce stacking mug - Ivory (comes in 12 pieces) Made out of 100% non-toxic melamine material Comes in wide range of other colors: blue, white, Ivory, yellow, pure red and green 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