Twin Pack.
Zalto recommend this glass for Riesling, Sauvignon Blanc and the like, as well as lighter-bodied reds. If you are familiar with the popular Riedel Riesling/Sangiovese glass, this would be your closest match. Its use is far from limited however. We use this glass for sherries, sparkling wine and even spirits (when Melanie Tesseron of Cognac Tesseron was in Australia this was the glass used at the tastings. It can work perfectly well as a general glass for both whites and reds.