Review on 6 Piece Durable BPA-Free Acrylic Airtight Food Storage Containers With Innovative FLiPLOCK Handle Lid - Perfect For Pantry Organization! by Brian Lee

I would NOT describe these as durable. Within an hour one of the bases was broken after my son saw it had M&Ms and tried to pick it up by the lid, allowing it to fall from his hands and hit the floor. It shattered one edge and cracked it all the way through (which then i had to clean up quickly so no children or animals would ingest shattered acrylic). I put flour in one of the containers and the seal was definitely not "air tight" - the lid pulled off with little to no effort on my part. In another container the side bulged out at the top where the lid was (obviously not making it air tight). I'm very sad with this purchase and already will have to replace at least part of the set.