Many wine enthusiasts know the problem that faces them when they decide to open a bottle of wine. Do they try and drink it all in one sitting, or let it sit in the fridge overnight, getting steadily worse-tasting because it's exposed to oxygen? For those people, a bottle of Private Preserve will provide a solution. It sprays a mixture of heavier-than-air inert gases into the top of the bottle. They settle on top of the remaining wine, creating a barrier that doesn't let the oxygen come in contact with it, so it can't react and spoil the wine. Now opened wine will keep well for days longer than usual! $9.95 USD.