Matte Black Brumate 20oz Era TumblerMeet your new adventure buddy! This Matte Black 20oz Era tumbler locks in freshness with its airtight lid and leak proof design. The ColdKey straw and BevGuard technology keep your drinks ice cold for 24 hours straight, while the cup holder friendly base means you're ready to roll anywhere. Era Tumblers are 100% leakproof with cold beverages and carbonated beverages with ice when in the locked position. Not recommended for use with hot beverages.