I had been gifted 2 Sistema containers and loved them, so I ordered 2 sets of these. LOVE these too. They seal well, are easy to open/close, and well designed to allow a smaller hand to grip. If you have arthritis, these will be easier to open than some other storage containers. I have the standard red-lid Rubbermaid food containers, which are difficult for my mother to open with her arthritis. The Sistema containers, however, are not difficult for her.I love that the larger containers come with a measuring cup to keep in the container and the smaller containers have pouring openings. These containers also makes it easier to fill in the bulk sections of the store or co-ops. These are dishwasher safe in the top rack, but you may need to hand wash the larger containers if your top rack is too short. Finally, I really like that the containers have an off-white lid and not a crazy color unlike so many of the other containers available.It's true that the flour container will not hold a complete American 5lb bag, but it holds about 4 lbs. I'm fine with that and just store the last pound in its package until I can add it to the container. Its definitely not something to get all wrapped-around-the-axel-about as other reviewers have. I believe these are made in New Zealand, so they probably have different standards there.A few years ago, King Arthur Flour used to carry these too, which is where I first found them.