Soft Silicone Vented Microwave Food Covers stretch to fit even large plates, bowls and containers—offering a tight, splatter-proof seal, then releasing steam through special vent when under pressure. The unique one-way vent allows air to escape the microwave cover while heating, but offers an airtight seal to keep food fresh when stored in the fridge. Preventing messy spills and splatters to keep your microwave clean, the round reusable silicone microwave lid covers cling tightly to plastic, glass, stainless steel, ceramic and more. The microwave splatter guard stays strong in hot or cool temperatures, and the covers are easy to clean by rinsing off, wiping down or tossing in the dishwasher. Heat resistant to 450°, the BPA-free silicone covers are great for cooking, reheating or melting butter in the microwave, transporting food to potlucks, and storing leftovers in the fridge to reheat again. Set of 2 microwave food covers includes 2 sizes: 6 1/3" dia. (stretches to 8 1/2" dia.) and 8 3/4" dia. (stretches to 11 3/4" dia.).