The Plastic Flat Lid for 12 oz. Dart Foam Cup is your best bet to creating leak and spill-proof packaging to-go for your customers. This white plastic lid is durable yet still easy to attach to the coordinating 12-ounce Dart foam cup (12J12). It's the perfect way to serve hot drinks or soup for carry-out because of the tight seal it creates, and the vent in the center of the lid will let steam safely escape from the container. This great lid option is sold 1000 per case to make it a cost-effective choice for your business too.