RTIC 16 oz Ceramic Lined Insulated Essential Pint Tumbler, Splash Resistant, Graphite

One little quibble: The lid is definitely splash proof IF it stays in place, but when I insert it and then close the stopper on freshly-brewed very hot tea, and start walking, the pressure of the. . . heat? I guess? immediately lifts the lid out of place to the point that I get nervous it might pop out as I'm trying to gather my things to head out the door. This is the downside of a press-on top, and the only fix is to NOT press the stopper fully closed in that situation. Still very little chance of splashing if I'm reasonably careful. The upside is a more pleasant drinking experience (smooth and thin lip) when I'm not using the lid. I love the ceramic coating which does NOT absorb tea stains at all (unlike so-called stainless steel) and this tumbler keeps my tea much hotter much longer than my previous (lost) KKanteen equivalent (plus this travel lid is much nicer to drink from). I recently tried a similar sized Sbx stainless steel tumbler that leached all the heat within 30 minutes. The Rtic tumbler is overall extremely well-engineered and also very beautiful.