Tandem Whiskey Set - 2 Scotch Tumblers with Whiskey Chilling Rocks Includes 6 whiskey stones in canvas storage bag Beautifully boxed set makes a great gift Glasses: Made in Germany, Capacity: 255ml, H: 3  inch, Top opening 2  inch, Base W: 2  inch Glasses designed to keep the stones on the bottom while drinking Natural soapstone, Freeze for 4-hour before using