PERFECT FOR WINE - Red wines are best to be served between 55-65 degrees while white wine is best 49-55 degrees. Keep your wine at that perfect temperature. SWEAT FREE – Tired of being told to put use a coaster? Tired of rings on your coffee table or condensation on your counter? Our insulation technology guarantees a sweat free drinking experience. SUPERIOR DESIGN – The design is not only beautiful but also very functional with the capacity to hold 16oz and fit perfectly in your hand. SPLASH-PROOF LID – Our wine glasses come standard with the SIC unbreakable splash-proof lid that also fits our 12oz tumbler and 20oz tumbler. LIFETIME WARRANTY – Just like all SIC products, you can rest assured that your product will be guaranteed for life (register your product at www.siccups.com)