Silicone Stretch Lids 6-Pack Various Sizes Cover for Bowl, Durable and Expandable to Fit Various Shapes, Airtight, Platters, Jars, Freezer, Salad

I put one on a bowl and packed it in my husbands lunch and even though it tipped over, nothing spilled. I put them on the top rack of the dishwasher and they are easy to clean.

They do not hold over the tops of container at all they just pop back if I would not recommend them at all