Serve hot and cold beverages using Dart J Cup Insulated Foam Cups. They maintain the temperature of the beverage you're drinking. Dart insulated foam cups are Styrofoam single-construction to resist breaking. They're also lightweight and easy to hold. These Dart 12-ounce cups are stackable, saving space wherever they're placed. Compatible lids are sold separately. Simply dispose of them in the trash after use. They're suitable for home or business use.