SEE UPDATED SECTION BELOW: With all of the raving reviews, I had high hopes on this product. Unfortunately I'm going to assume that the item I received was defective. It leaks. And it doesn't leak from the gasket/seal that goes into the bottle, it leaks from where the pourer (spout) meets the aerator. This piece is designed to open for cleaning, but it doesn't close tightly enough to prevent leakage. I purchased this because I wanted to have an aerator, but also because I wanted to stop the dripping of wine down the side of the bottle. This just made the dripping problem worse because now it drips onto the table or floor instead of just down the side of the bottle. I considered sealing it with rubber cement, but then I wouldn't be able to open it for cleaning purposes.
UPDATE 8/13/2018: After returning this item, I was contacted by customer service. They suggested that it likely was a defective product I received and sent me a new one at no cost. After receiving it, before trying it, I took it apart where the previous one was leaking and sure enough, there is a small rubber seal in the new one that was not on the original. That's the reason the first one was leaking. I can now say that this is a 5-star product along with 5-star support.
THE VINTORIO PREMIUM WINE AERATOR POURER Because Life Is Too Short To Drink Bad Wine... Everyone knows that in order to properly enjoy wine, you have to let it breathe. The problem is that this process takes too much time! Vintorio is committed to simplifying wine enjoyment, so that our customers need only focus on the pleasurable aspects of drinking quality wine. No more waiting for conventional decanters to fully open up wine! No more drips from using handheld aerators! Turn GOOD wine into GREAT wine! DOUBLE the VALUE of your wine INSTANTLY! Dramatically improve your wine's aroma, texture, and flavor Spout and stopper prevents drips during and after pouring Beautiful and elegant design guaranteed to impress Ergonomic design, easy to use and even easier to clean The Vintorio Aerator Pourer will bring the BEST out of your wine every time you pour! The Vintorio's aerating chamber injects air bubbles directly into the wine, instantly releasing aromas and flavors. You can actually see the air bubbles in the wine being poured! The rubber stopper is tapered and ribbed to create a leak-free seal and the ergonomic spout makes for an easy drip free pour. You no longer have to worry about wine stains AT ALL! To clean, simply twist the acrylic spout to detach it from the flow regulator and rinse all pieces with warm water. No more build-up of gunk in your aerator! We KNOW that you will love your new aerator. But if you are not satisfied with your purchase, we will refund your money back with no exception. LIFETIME SATISFACTION GUARANTEED! The Vintorio Wine Aerating Pourer is On Sale for a Limited Time Only! Click The ADD TO CART Button Right Now And Get Your Vintorio Aerator Pourer!