Soak through resistant cups are color coded for easy size identification to help lessen the chance of operator mistakes and speed up food assembly. Made from 100 percent annually renewable resources and meet ASTM standard D6868 or D6400. Commercially compostable only. Will not melt or deform, which makes them ideal for delivery and takeout. Microwave safe. Perfect for hot or cold foods such as soup, pasta salad, and mac and cheese.