Era Flip 40oz is the world’s first 100% leakproof, covered, flip-down, straw tumbler. It has our fully leakproof SlideSeal™ lid that works for both cold and iced carbonated beverages, SoftSip™ silicone straw so every sip feels like a luxury, ColdKey™ metal straw for minimizing the amount of plastic sitting in your water, BevGuard™ technology to keep your drinks cold for 24+ hours, and a cup holder friendly base so you can enjoy your favorite beverages, free of leaks and spills throughout your daily journey. Made for stress-free sips. Era Flip Tumblers are 100% leakproof with cold beverages and iced carbonated beverages when in the locked position. A 50% ice to liquid ratio is recommended when using carbonated beverages. Not recommended to be used in the locked position with hot beverages as pressure will build up and hot liquid may expel from the tops or sides. Using hot beverages with a straw poses a scalding risk.
