I've long been avoiding these storage containers with clips on the side, as they struck me as looking a bit gimmicky. Finding myself in dire need of some new containers, though, I thought I'd give them a try and ordered three in the 400 ml size. I liked them so much, I've since ordered six more!
Unlike my old containers, these are great because the lids are microwaveable. I just whip them out of the fridge, pull down the clips, and thrust the whole thing in the microwave. Better still, getting my scalding hot food out of the microwave and onto my plate is a doddle if I lift it out using the blue clips as handles (though possibly not such a good idea if using bigger containers and heavier contents).
This 400 ml size is just right for storing single portions (e.g. homemade chilli con carne, bolognese sauce) in the fridge or freezer. A portion of soup or leftover portions that contain rice or pasta might need something a bit bigger.
My only criticism is that they're a bit more fiddly to wash and dry than the traditional tubs.