Air Cork Wine Preserver (with spare balloon) - as seen on Shark Tank Air Cork Wine Preserver - includes Air Cork device, storage pouch, instructions and spare balloon. Protects wine from oxidation for 3-4 days. Balloon will NOT alter or affect the taste of wine. To Use: Lower balloon into bottle until at wine, squeeze the bulb pump to inflate the balloon and watch it create an air tight seal from within the bottle. Designed for standard size bottles only: For use in 750-ml size bottles. Not for carbonated beverages. Balloons should last 80+ uses and are easily replaceable. <span class="a-text-bold"><u>Includes:</u></span> Air Cork device, storage pouch, instructions and spare balloon. <span class="a-text-bold"><u>Protects:</u></span> Provides an absolute air tight seal for 3-4 days. Need a bit more time, just give the bulb another squeeze or two. <span class="a-text-bold"><u>Taste:</u></span> Preserves the initial flavors and aromas. <span class="a-text-bold"><u>Seals:</u></span> Balloon will NOT alter or affect the taste of wine. <span class="a-text-bold"><u>To Use:</u></span> Lower balloon into bottle until at the wine, squeeze the bulb pump to inflate the balloon and watch it create an air tight seal from within the bottle. <span class="a-text-bold"><u>Fits</u></span>: Designed for standard size bottles only: For use in 750-ml size bottles. Not for carbonated beverages. <span class="a-text-bold"><u>How Long Will It Last:</u></span> Balloons willlast 80+ uses. Balloons are easily replaceable. Air Cork uses a custom made, medical grade latex balloon. This balloon is lowered in to the unfinished bottle of wine and inflated using a custom produced pump in the form of a cluster of grapes. The balloon floats on top of the wine, and once the balloon touches the side of the bottle, the wine is completely sealed from the outside air, preventing further oxidation. You can see that the Air Cork is working and the bottle is completely sealed. Go ahead - you can even turn the bottle upside down. We want our customers to know that they can open a great bottle of wine for dinner on Tuesday night, seal the bottle with the Air Cork and still enjoy the remainder a few days later having retained those initial flavors and aromas.