Stackable bowls - Fridge helper

Hello!I present to you my solution to the lack of space in the fridge and the constant repackaging of uneaten food into containers and then back into the bowl.These adjustable lids fit any round bowl, just adjust its size and if you want, you can also adjust the thickness of the lid or the rim.Nothing more is needed, it can be that simple. *The lid is neither airtight nor waterproof, it is not intended for transporting the bowls, it only allows them to be stacked