The Italesse "Sparkle" is the most unique and innovative glass for Champagne and sparkling wine that I have ever experienced.  I say "experienced" because I discovered the effect the brilliantly designed glass had on wine quite by accident. 

The key to the success of this design is twofold - First, the shape of the glass gives ample surface area at the shoulder.  This provides ample surface area to maximize aeration.  The chimney tapers to concentrate aromas at the opening.  Second, the most unique and innovative feature of this glass are the 7 "perlage" points at the bottom.  Each point provides surface tension that releases the gas suspended in the wine.  Seven circular rings form at the top of the wine above each point.  

The Sparkle Glass is the perfect combination of wine glass and flute.  It releases aromatics and maintains effervescence.

While the Etoile glasses are touted by the manufacturer as break resistant and dishwasher safe, I recommend, hand washing and drying with a soft cloth.