there’d be no airflow in the cup. According to Atlas Obscura, who interviewed the authors of Coffee Lids: Peel, Pinch, Pucker, Puncture, the vent can be used to boost the coffee-drinking ...

Despite large capacity ... is a major drawback for commuters who want a coffee cup for their drive to work. Travel mugs almost always come with lids, but these vary in quality.

It looks like a traditional coffee cup, but despite feeling like thick cardboard, it holds up well in the dishwasher. There’s also a latex-free silicone lid and sleeve plus a ‘no-drip’ lid ...