I am always skeptical of "hobby toys". These sorts of things generally sound nice as a gift. However, in reality, they either don't do anything in reality or are useless to the person with the hobby.
This product really does what it says. It puts a lot of air into a glass of wine as you pour it. It does seem to instantly decant the glass of wine for you. It is easy to use, and almost as important, easy to clean. The rubber "holder" is invaluable, as the Vinturi will have some wine drips that you don't want spilled on your floor somewhere.
Many wines improve with decanting. After 1 month, we have continued to use the Vinturi and prefer using it to both our decanter or going with no decanting. I recommend this product to others.