Silicone Stretch Lids Stretch And Fresh This stretchy, BPA-free and 100% food-grade silicone lid set includes six round lids of various sizes that can all be stretched to fit most bowls, jars, and cups. You can even use them to keep fruits fresh, since one of these lids will easily attach to the face of a partially eaten watermelon or grapefruit. You can safely use these in freezers or microwaves. They’re dishwasher safe to boot. Silicone Tops Are Round Yet Stretchy Enough To Fit Snugly Over Odd-Shaped Mugs, Pots, Bowls, And Containers. Leak-Proof With An Air-Tight Seal So Foods Stay Fresh And Tasty. 6 sizes to fit any container: 2.5"-11"