LidLover Silicone Bowl Lid, 9"-12", Green Lid Lover's Universal Lids create an airtight seal on multiple-sized bowls and plates, up to 12-Inch Each Lid has a unique triple-ring feature inside to fit and seal bowls and plates of various sizes Place lid over bowl and press the center to seal and keep contents fresh; also works as a trivet in the microwave Works upside down and right side up to seal porcelain, ceramic, stainless, glass, or plastic bowls and plates FDA-approved silicone is safe for use in the freezer, oven and microwave; nonstick for easy cleanup; top-rack dishwasher safe