WARNING !! These are books yoghurt pots with lids that are old models of SEB. Indeed, these covers do not have the tongue which facilitates opening of the container. SEB has released to the market and replaces them all on customer demand because they are too difficult to open. They have improved the design by adding a tab which is also very effective. The price of this article is certe interesting but better to spend a few Euros more and receive current models which will greatly facilitate your life!