After having an opportunity to do a tasting using patented O2 glasses, we were amazed at their ability to add immediate oxygenation into the wine, adding depth and complexity on the nose. Since then, we have tested the glasses in multiple tastings with friends and customers, side-by-side with high quality tasting glassware. We closed the top of both glass types and, after a good swirl, tested the nose as well as the taste. There is almost always an expression of disbelief on the faces of those in the tasting - the difference the glass imparts to the enjoyment of the wine is remarkable. We heartily recommend these glasses for all our wine friends.