1950's set of four glasses featuring an iridescent finish. These originally were referred to as "sour" glasses because it was the traditional glassware for a whiskey sour. Their shape is ideal for Champagne, Aperol sprits, and whiskey sours. But just like any glass, I'm a firm believer that as long as you are putting liquid in it, you can drink whatever you darn well chose. The set includes the original care instructions from the manufacturer.