Whether Red, White, Or Ros?, Make The Most Of Your Favorite Wines With The Glass Wine Freeze Cooling Cup. Host's Proprietary Cooling Gel Is Precisely Engineered To Keep Your Beverage Perfectly Chilled For Hours. Real Glass Provides A Satisfying Sip - This Set Of Wine 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. Perfect For All Wines - Achieve The Ideal Serving Temperature For Every Wine With This Set Of Stemless Wine Glasses. Freeze These Insulated Glasses For At Least Two Hours To Chill The Gel All The Way, Or Store In The Fridge For A Lighter Cooling Effect. The Magic Is In The Gel - The Insulated Walls Of These Wine Tumblers Are Filled With Proprietary Cooling Gel, Which Works As A Wine Chiller When Frozen. Freeze Tumblers For Two Hours To Keep White Wine Cold, Or In The Fridge For Cellar Temperature Reds. Serve Your Wine At The Right Temperature - Generally, White Wines Should Be Served Cold At 43 To 53 Degrees Fahrenheit, And Red Should Be Served At Just Cooler Than Room Temp, Also Known As Cellar Temperature, Around 58 To 60 Degrees. An Innovative Gift For A Wine Lover Who Has Everything - These Wine Glasses Are Perfect For Any Occasion Or Group Event And Make A Great Gift For Wine Lovers Or Mom On Mother'S Day--Even For The Wine Enthusiast Who Has Everything.