One part rocket scientist, and two parts supermodel, the GIR Lid Series turns any bowl into a storage container by making an airtight seal. An alternative to plastic wrap and foil, these lids are made from heavy-duty silicone heat resistant to 550 F. Designed for baking dishes, casseroles, pans, tabletop, and everyday storage, our rectangular lids are available in three sizes generously portioned to fit the most common rectangular and square container dimensions. Reheat or steam food in the microwave/stove or bake with them in the oven. Aesthetically gorgeous, and totally functional. Freezer, fridge, and dishwasher safe.