Shaped like an icicle, the Corkcicle is made from BPA-free plastic and filled with a freezable gel. When you insert it into a wine bottle, it chills the wine from the inside. The Corkcicle will maintain the ideal serving temperature for an already-chilled white wine for up to an hour, and it can cool a red wine from room temperature to the optimal cellar temperature in 15 minutes. Preparation is easy. Simply freeze the Corkcicle for at least two hours before using, and make sure you pour the first small tasting glass before you insert the chilling device into a new bottle.