Crafted using X1 Crystalline, weighing in at 1lb each, the Peaks Glass is the only true precision glass sculpture of iconic mountains in a Crystal glass. The set includes one of each four iconicMountains - Denali, Mont Blanc, K2 and Mt. Fuji.The Patented Chill-Charge System™ chills down your drink in just 18 seconds. Quickly release whiskey aromas by swirling the spirits gently around the faces of the Peaks.