GIR: Get It Right Premium Silicone Round Lid, 6 Inches, Gray These suction lids turn any bowl into a storage container; fit the most common round container sizes Reheat or steam food in the microwave/stove, bake with them in the oven - heat resistant to 550 F These lids create a strong airtight suction seal on any smooth surface - glass, stainless steel, aluminum, plastic, Pyrex and more Unibody design has no holes or seams, making it super hygienic and easy to clean; dishwasher safe Manufacturer's 100% lifetime guarantee, made to last forever in your kitchen; BPA, BPS, and phthalate free