The World's Leading Aerating Wine Glass. When using Chevalier Collection aerating wine glasses, pull the cork on your bottle of choice and simply pour the wine into the internal vessel of the glass. On the pour, the wine is forced through strategically designed spouts in the base of the internal vessel that stream the wine into the main bowl of the glass. This process creates a shower-head effect that exposes the wine to the most aeration possible on a direct pour. These designs have been laboratory tested and proven to aerate wine just as effectively, and in some cases more effectively, than third party aeration devices. FEATURES: 1- Made of borosilicate glass (PYREX). 2- LEAD FREE and designed in the United States of America. 3- Hand blown and hand assembled. 4- The wine will cascade through, resulting in 7oz of aerated wine. 5- Dimensions- 4" x 4" x 4" . 6- Dishwasher safe for easy cleaning. 7- Patented Design. REACH YOUR WINE'S POTENTIAL