Keep Your Drink Properly Chilled, Without Watering It Down, In The Glass Whiskey Freeze Cooling Cup. After Just 2 Hours In The Freezer, Host's Proprietary Cooling Gel Will Keep Your Favorite Spirit Cooled For Hours, While Subduing The Overpowering Flavor Most Common In Cask Strength Whiskey. Real Glass Provides A Satisfying Sip - This Set Of Whiskey Glasses Is Constructed Out Of Real Glass, Combining The Innovation Of Our Gel-Filled Double Walled Cooling Technology With The Satisfying Feel Of Drinking Out Of Real Glass. Keep Whiskey Chilled With No Dilution - Bourbon And Scotch Benefit From A Well-Designed Drinking Experience. The Host Whiskey Freeze Cocktail Glasses Are Engineered To Keep Whiskey From Being Watered, While Keeping Them At The Ideal Serving Temperature. The Magic Is In The Gel - The Insulated Glass Walls Of These Shot Glasses Are Filled With Proprietary Cooling Gel That Chiils Your Liquor When Frozen. Pop Them In The Freezer For At Least Two Hours And Keep Your Liquor Between 43-53 Degrees Fahrenheit. Comfort-Grip Silicone Band For Easy Sipping - The Double Walled Glass Construction Creates An Insulated Whiskey Glass Set That Is Perfect For The Outdoors. The Insulated Silicone Band Makes For Comfortable Handling And A Steady Grip. Innovative Gift For The Whiskey Enthusiast Who Has Everything - This Whiskey Glass Set Is Perfect For Dad, Or Any Whiskey Lover Or Bourbon And Scotch Enthusiast Who Strives For The Ideal Spirit Sipping Experience.