The perfect whisky drinking experience has been invented: This double-walled vessel provides optimal aeration through specially developed protrusion forms inside the glass. When swirled around the glass, the whisky forms a standing wave shape, which increases the surface-to-air ratio and rate of oxidization. Considerably more ethanol evaporates, reducing volatility, so the whisky becomes significantly more expressive. Made of blown borosilicate glass. Set of two. Hand wash.