I read lots of comments "lids close properly", etc. I use these pots for 6 months, in the freezer and in the microwave, I have no worries ... We just know the PROPER TECHNIQUE to close these little boxes: the shape of the covers is such that, PRECISELY, tightly closed cans are SEALED. To close the box CORRECTLY, you must: - Start with one side of the sink bottom cover ... Preferably to oppose the tongue ... then the AIR content in the box PREVENTS an airtight seal. - It is then, with one hand, the PRESS CENTER of the cover, and on the other, TAB LEVER cover. Thus, AIR POWER VA SÉVACUER. - Release the lever, and the hand that presses the lid will automatically close the box. The slight deformation of the cover (it is planned for it) will create a slight EMPTY AIR ... and you get a closed box HERMETICALLY, resistant to manipulation and transport in the bottom of the bag, without any precautions.
There you go !!!!!
Try and repetition months if the lids are not sealed!
