AIR CORK
To use it, simply lower the balloon end until it just grazes the surface of your remaining wine. Give the adorable grape-shaped pump a few squeezes and the balloon will expand to the exact size of the bottle. In this airtight atmosphere leftover wine will stay at its optimal flavor for up to three days, untouched. Need more time before you pour another glass of wine? Squishing the grape cluster a few more times will give the balloon an additional boost.
