A new Era of straw tumbler is here. Our Era tumbler is totally leakproof, and made for stress free sips on the go. It has our fully leakproof Ü-Turn™ lid that works for both cold and carbonated beverages, ColdKey™ metal straw for minimizing the amount of plastic sitting in your water, BevGuard™ technology to keep ice for 24+ hours, and a cup-holder friendly base so you can enjoy 30oz of your favorite beverage, free of leaks and spills throughout your daily journey.Era Tumblers are 100% leakproof with cold beverages and carbonated beverages with ice when in the locked position. Not recommended to be used in the locked position with hot beverages.  Specs Capacity: 30oz Empty Weight: 1.4 lbs. (0.63kg) Max Height: 9.8” (with straw) Max Width: 5.4“ (with handle) Min Width: 3” (cup holder friendly)