They work
I received these last week and finally cleared out my messy Tupperware cabinet in my kitchen. These stack nicely and the lids seal  well. I’ve washed several and they’ve held up fine. They are a great time for leftovers. You can fit about three on top of each other on a shelf in the fridge with a little spare room. I like them. I’d definitely purchase these. As far as sturdiness- they are more of the take along that after months of daily use would probably crack- these aren’t super thick- so I wouldn’t say you’d have them for years and years- but they get the job done.
Rating: 4 stars