The Era Flip 40oz Tumbler reinvents your daily hydration with the world's first 100% leakproof, covered, flip-down straw design. Featuring innovative SlideSeal technology, this tumbler keeps both still and iced carbonated beverages completely secure and spill-free when locked. The combination of a comfortable SoftSip silicone mouthpiece and a ColdKey metal straw reduces plastic contact while ensuring every sip is refreshing. With BevGuard insulation, your drinks stay ice-cold for 24+ hours, while the cupholder-friendly base makes it the perfect travel companion.