You'll want OXO's airtight, stackable containers popping up everywhere! These storage tubs form an airtight seal at the push of a button, 'popping' as they do so, then just push the button again to open. The one-touch mechanism couldn't be easier to operate, and we see these brilliant containers popping up all around the home, not just in your kitchen.2.3 litre. 16cm Sq. x 16cm H.