8 oz rectangular deli containers with lid are made from PET. These containers are 100% recyclable and are still light and strong like plastic. Perfect for foods such as pasta salads, potato salads, other sides, and desserts for grab-and-go, to-go, and delivery. These containers have a tamper alert hinge, which protrudes outward when torn – alerting your customers that the container has been opened, and remains attached to the container. Great for the environment and business, impress your customers with your commitment to green packaging!