From Brumate’s Website: the Corcovado Print Insulated Mug with Handle, 35-oz features: 100% leakproof BevLock™ lid to seal in your beverages and stop leaks OctaLock™ thread system to make taking your lid on and off a breeze Featuring our innovative MagFlip™ Technology to keep you lid open while you sip for hot, cold, and carbonated beverage with ice Also equipped with a scratch-resistant + comfort grip handle Cup holder friendly base Removable, color-matched silicone sleeve for ultimate durability BevGuard™ technology to keep your drinks hot for 6+ hours or cold for 24+ hours