BruMate Era 40oz Tumbler in Blue Agave DWER40BAV BLUEAGAVE OS LT Guava 40oz Era Tumbler Whiskey Skies BrMate Era 40 oz Tumbler with Handle and Straw 100% Leakproof Blue Agave 40oz Era Tumbler Brumate 40oz ERA Blue Agave Ridgway CNC. The Era tumbler is completely leakproof, perfect for hassle free sips while on the move. Its fully sealed lid is designed for both cold and carbonated drinks, a ColdKey stainless steel straw helps reduce plastic waste in your water, BevGuard technology keeps ice cold for over 24 hours, and a cup holder friendly base allows you to enjoy 40oz of your preferred beverage without any leaks or spills on your daily adventures. 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.