There's a lot of engineering going on here...

Bernoulli's principle states that as the speed of a moving fluid increases, the pressure within the fluid decreases.

When wine is poured in the vinturi, its design creates an increase in the wine's velocity and a decrease in its pressure. this pressure difference draws in air, which is mixed with wine for perfect aeration. But what really matters is vinturi's affect on wine which are:

Better Bouquet
Sample the nose. you'll appreciate the subtle aeromatic differences and the full aroma of the wine. vinturi allows wine to display its intended aromas.

Enhanced Favors
Go ahead, take a sip. Vinturi's wine tastes better. It is more flavorful and has better mouthfeel. It tastes like a richer, more expensive wine. It tastes like it was intended to and is more enjoyable.

Smoother Finish
Vinturi's aeration is very effective at softening tannins which results in a much more pleasant finish. Any bitterness or bad aftertaste is reduced or eliminated.

Maximize aeration by pouring through a funnel into a glass or decanter. The wine flows down the interior decanter sides, blending it with air. This silver funnel has a curved pouring spout that decants wine gently with no splashing.

An original and patented decanting pourer, oxygenates the wine as you pour. You can see an hourglass-like narrow neck inside the pourer, called a venturi pipe. This increases the speed of wine flow, creating a vacuum that draws in air through the small vent hole. Further, a special stainless screen disperses the flow before it leaves the pourer.