Safety: Safe to use in the microwave oven, on the stove, in the refrigerator, or the freezer.They are great for storing leftovers, taking dishes to potluck, stacking bowls, unfinished drinks or any leftover fruits and vegetable.Resuable: Flexible silicone material, these silicone bowl Cover can be used over and over again. Just rinse them with warm soapy water or throw them in a dishwasher.Provide proper seal: Freezer safe silicone lids will create a perfect seal, or any other plastic or metal containers for secure fit helping to keep food fresher and longer, freeze or heat they will remain intact.Excellent compatibility: These flexible bowl cover can expand to fit many shapes and sizes of containers (oval, rectangle, round, square, etc). Container cover perfectly fits your bowls, containers, mason jars, mugs or cans.Specifications:Material: silicone.Color: show as pictures.Diameter: 6.5cm./9.5cm/11.5cm/14.5cm/16.5cm/20.5cm.Quantity: 6pcs.Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Include:6 * Silicone Fresh Keeping Covers.