Double-wall vacuum insulation and the No Sweat™ Design ensure your hands stay dry, no matter the temperature of your drink. The updated Load-and-Lock™ Gasket requires just a simple quarter-turn to securely lock your beverage in place, making it easier than ever to enjoy your drink worry-free. Resists dents and drops Double wall vacuum insulation Dishwasher safe No sweat design Thick-Gauge steel that is extremely durable Colors that will not chip or crack