I recently purchased 2 x 1.2L SealTight containers . Two weeks later I purchased 4 x 0.75 L SealTight containers . These, I stacked inside my older 2 x 2 L SealTight containers . All the while , disposing of my other various sized containers . So, you see the pattern here, replacement by stealth before my resident “HOARDER” becomes alarmed !!! The SealTight containers are just that, sealed tight with a blue lid, which doesn’t show discolouration as much as the older WHITE lids . A great product, great stackable containers …. Ok, so they’re a little more costly, but well worth it !!!