The Müv 25oz  has a 100% leakproof BevLock™ lid to seal in your beverages and stop leaks, new OctaLock™ thread system to make taking your lid on and off a breeze, and our MagFlip™ technology to assist in keeping your lid open while you sip. Also equipped with a cup holder friendly base and our BevGuard™ technology to keep your drinks hot for 6+ hours or cold for 24+ hours.