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-TurnTM lid that works for both cold and carbonated beverages, ColdKevTM metal straw for minimizing the amount of plastic sitting in your water, SoftSipTM silicone straw so every sip feels like a luxury, BevGuardTM technology to keep drinks cold for 24+ hours, and a cup-holder friendlly base so you can enjoy 40oz of your favorite beverage, free of leaks and spills throughout your daily journey. Era Tumblers are 100% leakproof with cola beveraaes and carbonated beverages with ice when in the locked position. Not recommended tc be used in the locked position with hot beverages. In the rare Eucalyptus color has a few small chips near the rim only had water in it.