SILICONE LIDS IN VARIOUS SIZES: The set includes 6 / 12 clear silicone covers in various sizes. Thanks to their stretchable material, the food lids will easily fit most bowls, pots, containers, mugs, cups, cans, jars, and you can even use them to cover your half-cut melon or watermelon.Multi-useful & Super Practical - These silicone food covers are ideal for storing leftovers, taking dishes to potluck, stacking bowls, unfinished drink, leftover fruits and vegetables. Very easy to create a perfect seal on glass, plastic or metal containers to keep food fresh. Heat resistance from -40 C (-40 F) to 232 C (450 F) that is fridge and microwave use safe.ABSOLUTELY SAFE MATERIALS: Your safety is our top priority, for this reason weve made sure the silicone stretching lids are BPA-free, food grade and completely nontoxic. You can therefore use the stretch lids all the time without worrying about yours and your familys healthStretchable - The silicone material is super flexible to be stretched longer 1-2cm, which is perfect to fit various shapes of food containers. -- Tips: please make sure that the container size does not exceed the maximum stretchy size and the container.