Aerate and dispense your favorite wine at the same time. The VinOStream features a soft rubber stopper that creates an air tight seal for the opened wine bottle and the dispenser allows for easy, no spill pouring of a measured 2 oz. portion. This aerator, dispenser is sure to be a hit with any wine enthusiast. Includes 2 cartridges, additional cartridges sold separately. Fits most standard wine bottles.