EPS Foam Containers use insulated foam to keep food at its proper serving temperature longer. Expanded polystyrene material works with hot and cold foods. Containers can be prepackaged with food or used for immediate serving. They are perfect for sauces, soups, pasta salad, ice cream and more. Use Dart 8 oz. to 60 oz. EPS Foam Vented Lids or 32 oz. OPS Plastic Non-Vented Lids (none included) to keep your food covered.