Silicon Suction Lids and Food Covers - Set of 5 creates a tight seal on all smooth rims, be it stainless steel, glass, plastic, or melamine. It prevents spills by creating an air and watertight seal. The Silicone Suction Lids adjusts to fit almost any type or brand of cookware or container. Perfect for reheating and storing leftovers. The Silicone Suction Lids also saves money by eliminating the need for plastic wrap. Nonstick, reusable and temperature resistant.