Plastic， reusable bowl covers provide a fast and easy way to cover food. Fits 2-inch to 10-inch bowls. 4 small， 3 medium， 3 large， and 2 extra-large covers included. Works on plastic bowls where cling wraps fail. Wash and use over and over. Keeps food fresh with no refrigerator smells. Sold on a pre-loaded clip strip. Online purchases are in packages of 6.