These are the best containers I've found for freezing. I've read thru all the reviews. The bento box type are not good, the lids crack.
They come in 16 oz or 32 oz.
I like using the 16 oz for freezing my lunches for the week. It's just about the right size.
The 32 oz containers are excellent for freezing soups and they stack on top of each other.
Just don't give them away, they never come back!