MARTINIS SHOULD ALWAYS BE SERVED CHILLED - The Host Martini Freeze cocktail glasses are engineered specifically to keep cocktails frosty and refreshing, whether shaken or stirred. No ice or dilution needed. THE MAGIC IS IN THE GEL - The insulated plastic walls of these stemless martini cocktail glasses are filled with proprietary cooling gel. This works as a beverage chiller when frozen. Freeze for two hours and keep your drinks chilled for longer. COMFORT-GRIP SILICONE BAND FOR EASY SIPPING - The BPA-free plastic construction creates a sturdy martini glass that works everywhere. An insulated silicone band on the base makes for comfortable handling, perfect for the outdoors! Hand wash only. THE PERFECT GLASS FOR A WIDE RANGE OF CLASSIC COCKTAILS - All kinds of classic cocktail recipes stay frosty in the Host Martini Freeze. Enjoy a manhattan, cosmopolitan, or classic gin or vodka martini without watering down your quality ingredients. INNOVATIVE GIFT FOR THE COCKTAIL ENTHUSIAST WHO HAS EVERYTHING - This martini glass set is perfect for dad, or any cocktail enthusiast who strives for the ideal spirit sipping experience. Perfect camping accessory!