I bought this to replace the previous design as some of the lids no longer fit properly and thus they leak. No I have not put them in the oven (microwave, electric or gas) and neither have I put them in a dishwasher as we do not have one. They have only been washed in hand hot soapy water.Anyway now that I've got that out of the way, JJ offered me a 20% discount so I bought these as replacements. The sealing arrangment is much more tolerant of slight differences in lid size so I shouldn't have the same problems over years of use.

Great set of storage boxes. Love the fact that they nest, thus saving space in the cupboard when not in use. Lovely colours and a dot on the base to help match the right lid, although I don’t think this is really needed. Good quality plastic and so far no warping.

I bought a few sets of these, both short and tall, 2 years ago. The lids have started to curl upwards and do not fit properly. I use the tall containers for flour, sugar, museli etc so the tops haven't been constantly washed. I really expected them to last longer. The type with clip on lids work much better, especially Sistema...no problem with them.