Please Note: Due to these items being on sale for liquidation purposes, they cannot be returned once a purchase is completed. Excellent for hermetic closing of all common kitchen vessels with flat edge, in particular dishes, pots, casseroles, etc. smaller than the diameter of the cover. It can be used on metal, glass, ceramic and plastic vessels, it is perfectly space-saving, can be folded, easy to clean. Made of excellent heat-resistant silicone, resistant from -40 to +230 °C.